ImportReadData.java
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|---|---|---|
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org.apache.derby.impl.load |
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Apache Derby |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| LINE_COMMENT | Number of line comments |  |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| SIZE | Size of the file in bytes | |
| RETURNS | Number of return points from functions | |
| JAVA0081 | JAVA0081 Boolean literal in comparison | |
| JAVA0009 | JAVA0009 Protected member in final class | |
| CYCLOMATIC | Cyclomatic complexity | |
| DECL_COMMENTS | Comments in declarations | |
| LOOPS | Number of loops | |
| COMMENTS | Comment lines | |
| LINES | Number of lines in the source file | |
| BLOCKS | Number of blocks | |
| COMPARISONS | Number of comparison operators | |
| LOGICAL_LINES | Number of statements | |
| ELOC | Effective lines of code | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| LOC | Lines of code | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| OPERATORS | Number of operators | |
| PROGRAM_LENGTH | Halstead program length | |
| JAVA0084 | JAVA0084 Should use compound assignment operator | |
| OPERANDS | Number of operands | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| EXITS | Procedure exits | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| UNIQUE_OPERANDS | Number of unique operands | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0095 | JAVA0095 Uninitialized private field | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0119 | JAVA0119 Control variable changed within body of for loop | |
| NEST_DEPTH | Maximum nesting depth | |
| PROGRAM_VOLUME | Halstead program volume | |
| FUNCTIONS | Number of function declarations | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| WHITESPACE | Number of whitespace lines | |
| JAVA0171 | JAVA0171 Unused local variable | |
| JAVA0173 | JAVA0173 Unused method parameter | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| PARAMS | Number of formal parameter declarations | |
| DOC_COMMENT | Number of javadoc comment lines | |
/*
Derby - Class org.apache.derby.impl.load.ImportReadData
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.derby.impl.load;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import org.apache.derby.iapi.services.sanity.SanityManager;
import java.sql.SQLException;
final class ImportReadData implements java.security.PrivilegedExceptionAction {
//Read data from this file
private String inputFileName;
private int[] columnWidths;
private int rowWidth;
private char[] tempString;
private int numberOfCharsReadSoFar;
//temporary variables
private BufferedReader bufferedReader;
//temporary variable which holds each token as we are building it.
private static final int START_SIZE = 10240;
private char[] currentToken = new char[START_SIZE];
private int currentTokenMaxSize = START_SIZE;
//This tells whether to look for a matching stop pattern
boolean foundStartDelimiter;
int totalCharsSoFar;
//following is used to ignore whitespaces in the front
int positionOfNonWhiteSpaceCharInFront;
//following is used to ignore whitespaces in the back
int positionOfNonWhiteSpaceCharInBack;
int lineNumber;
int fieldStartDelimiterIndex;
int fieldStopDelimiterIndex;
int stopDelimiterPosition;
boolean foundStartAndStopDelimiters;
//in the constructor we open the stream only if it's delimited file to find out
//number of columns. In case of fixed, we know that already from the control file.
//then we close the stream. Now the stream is reopened when the first record is
//read from the file(ie when the first time next is issued. This was done for the
//bug 1032 filed by Dan
boolean streamOpenForReading;
static final int DEFAULT_FORMAT_CODE = 0;
static final int ASCII_FIXED_FORMAT_CODE = 1;
private int formatCode = DEFAULT_FORMAT_CODE;
private boolean hasColumnDefinition;
private char recordSeparatorChar0;
private char fieldSeparatorChar0;
private boolean recordSepStartNotWhite = true;
private boolean fieldSepStartNotWhite = true;
//get properties infr from following
protected ControlInfo controlFileReader;
//Read first row to find out how many columns make up a row and put it in
//the following variable
protected int numberOfColumns;
// the types of the columns that we are about to read
protected String [] columnTypes;
//Read control file properties and write it in here
protected char[] fieldSeparator;
protected int fieldSeparatorLength;
protected char[] recordSeparator;
protected int recordSeparatorLength;
protected String nullString;
protected String columnDefinition;
protected String format;
protected String dataCodeset;
protected char[] fieldStartDelimiter;
protected int fieldStartDelimiterLength;
protected char[] fieldStopDelimiter;
protected int fieldStopDelimiterLength;
protected boolean hasDelimiterAtEnd;
// variables realted to reading lob data from files.
private ImportLobFile[] lobFileHandles; // lob file handle object
private String lobFileName; // current file name
private int lobOffset; // offset of the current large object
private int lobLength; //length of the current large object
//load the control file properties info locally, since we need to refer to them
//all the time while looking for tokens
private void loadPropertiesInfo() throws Exception {
fieldSeparator = controlFileReader.getFieldSeparator().toCharArray();
fieldSeparatorLength = fieldSeparator.length;
recordSeparator = controlFileReader.getRecordSeparator().toCharArray();
recordSeparatorLength = recordSeparator.length;
nullString = controlFileReader.getNullString();
columnDefinition = controlFileReader.getColumnDefinition();
format = controlFileReader.getFormat();
dataCodeset = controlFileReader.getDataCodeset();
fieldStartDelimiter = controlFileReader.getFieldStartDelimiter().toCharArray();
fieldStartDelimiterLength = fieldStartDelimiter.length;
fieldStopDelimiter = controlFileReader.getFieldEndDelimiter().toCharArray();
fieldStopDelimiterLength = fieldStopDelimiter.length;
hasDelimiterAtEnd = controlFileReader.getHasDelimiterAtEnd();
// when record or field separators start with typical white space,
// we can't ignore it around values in the import file. So set up
// a boolean so we don't keep re-testing for it.
if (recordSeparatorLength >0) {
recordSeparatorChar0=recordSeparator[0];
recordSepStartNotWhite = (Character.isWhitespace(recordSeparatorChar0)==false);
}
if (fieldSeparatorLength >0) {
fieldSeparatorChar0=fieldSeparator[0];
fieldSepStartNotWhite = (Character.isWhitespace(fieldSeparatorChar0)==false);
}
}
//inputFileName: File to read data from
//controlFileReader: File used to interpret data in the inputFileName
ImportReadData(String inputFileName, ControlInfo controlFileReader)
throws Exception {
this.inputFileName = inputFileName;
this.controlFileReader = controlFileReader;
//load the control file properties info locally, since we need to refer to
//them all the time while looking for tokens
loadPropertiesInfo();
//read the first row to find how many columns make a row and then save that
//column information for further use
loadMetaData();
lobFileHandles = new ImportLobFile[numberOfColumns];
}
//just a getter returning number of columns for a row in the data file
int getNumberOfColumns() {
return numberOfColumns;
}
/**if columndefinition is true, ignore first row. The way to do that is to just
* look for the record separator
* @exception Exception if there is an error
*/
protected void ignoreFirstRow() throws Exception {
readNextToken(recordSeparator, 0, recordSeparatorLength, true);
}
/** load the column types from the meta data line to be analyzed
* later in the constructor of the ImportResultSetMetaData.
*/
protected void loadColumnTypes() throws Exception {
int idx;
String [] metaDataArray;
// start by counting the number of columns that we have at the
// meta data line
findNumberOfColumnsInARow();
// reopen the file to the start of the file to read the actual column types data
closeStream();
openFile();
// make room for the meta data
metaDataArray=new String [numberOfColumns];
// read the meta data line line - meta data is always in a delimited format
readNextDelimitedRow(metaDataArray);
// allocate space for the columnTypes meta data
// since the meta data line contains a combination of column name and
// column type for every column we actually have only half the number of
// columns that was counted.
columnTypes=new String[numberOfColumns/2];
for(idx=0 ; idx<numberOfColumns ; idx=idx+2) {
columnTypes[idx/2]=metaDataArray[idx+1];
}
// reopen to the start of the file so the rest of the program will
// work as expected
closeStream();
openFile();
// init the numberOfColumns variable since it is
// being accumulate by the findNumberOfColumnsInARow method
numberOfColumns=0;
}
private void openFile() throws Exception {
try {
java.security.AccessController.doPrivileged(this);
} catch (java.security.PrivilegedActionException pae) {
throw pae.getException();
}
}
public final Object run() throws Exception {
realOpenFile();
return null;
}
//open the input data file for reading
private void realOpenFile() throws Exception {
InputStream inputStream;
try {
try {
URL url = new URL(inputFileName);
if (url.getProtocol().equals("file")) { //this means it's a file url
inputFileName = url.getFile(); //seems like you can't do openstream on file
throw new MalformedURLException(); //so, get the filename from url and do it ususal way
}
inputStream = url.openStream();
} catch (MalformedURLException ex) {
inputStream = new FileInputStream(inputFileName);
}
} catch (FileNotFoundException ex) {
throw LoadError.dataFileNotFound(inputFileName, ex);
} catch (SecurityException se) {
throw LoadError.dataFileNotFound(inputFileName, se);
}
java.io.Reader rd = dataCodeset == null ?
new InputStreamReader(inputStream) : new InputStreamReader(inputStream, dataCodeset);
bufferedReader = new BufferedReader(rd, 32*1024);
streamOpenForReading = true;
}
//read the first data row to find how many columns make a row and then save that
//column information for future use
private void loadMetaData() throws Exception {
//open the input data file for reading the metadata information
openFile();
// if column definition is true, ignore the first row since that's not
// really the data do uppercase because the ui shows the values as True
// and False
if (columnDefinition.toUpperCase(java.util.Locale.ENGLISH).equals(ControlInfo.INTERNAL_TRUE.toUpperCase(java.util.Locale.ENGLISH))) {
hasColumnDefinition = true;
ignoreFirstRow();
}
if (formatCode == DEFAULT_FORMAT_CODE) {
findNumberOfColumnsInARow();
}
closeStream();
}
/**close the input data file
* @exception Exception if there is an error
*/
void closeStream() throws Exception {
if (streamOpenForReading) {
bufferedReader.close();
streamOpenForReading = false;
}
// close external lob file resources.
if (lobFileHandles != null) {
for (int i = 0 ; i < numberOfColumns ; i++)
{
if(lobFileHandles[i] != null)
lobFileHandles[i].close();
}
}
}
//actually looks at the data file to find how many columns make up a row
int findNumberOfColumnsInARow() throws Exception {
// init the number of columns to 1 - no such thing as a table
// without columns
numberOfColumns=1;
while (! readTokensUntilEndOfRecord() ) {
numberOfColumns++;
}
//--numberOfColumns;
//what shall we do if there is delimeter after the last column?
//reducing the number of columns seems to work fine.
//this is necessary to be able to read delimited files that have a delimeter
//at the end of a row.
if (hasDelimiterAtEnd){
--numberOfColumns;
}
// a special check - if the imported file is empty then
// set the number of columns to 0
if (numberOfCharsReadSoFar==0) {
numberOfColumns=0;
}
return numberOfColumns;
}
//keep track of white spaces in the front. We use positionOfNonWhiteSpaceCharInFront for
//that. It has the count of number of white spaces found so far before any non-white char
//in the token.
//Look for whitespace only if field start delimiter is not found yet. Any white spaces
//within the start and stop delimiters are ignored.
//Also if one of the white space chars is same as recordSeparator or fieldSeparator then
//disregard it.
private void checkForWhiteSpaceInFront() {
//if found white space characters so far, the following if will be true
if ((positionOfNonWhiteSpaceCharInFront + 1) == totalCharsSoFar &&
((!foundStartDelimiter) && (!foundStartAndStopDelimiters) )) {
char currentChar = currentToken[positionOfNonWhiteSpaceCharInFront];
if (//currentChar == '\t' ||
//currentChar == '\r' || alc: why isn't this included?
// alc: BTW, \r and \n should be replaced
// or amended with the first char of line.separator...
//currentChar == '\n' ||
//currentChar == ' ') {
// use String.trim()'s definition of whitespace.
// i18n - check for whitespace - avoid doing a hard coded character
// check and use the isWhitespace method to cover all the Unicode
// options
Character.isWhitespace(currentChar) == true) {
if ((recordSepStartNotWhite || (currentChar != recordSeparatorChar0))
&&
(fieldSepStartNotWhite || (currentChar != fieldSeparatorChar0)))
//disregard if whitespace char is same as separator first char
positionOfNonWhiteSpaceCharInFront++;
}
}
}
//look for white spaces from the back towards the stop delimiter position.
//If there was no startdelimite & stopdelimiter combination, then we start from the back
//all the way to the beginning and stop when we find non-white char
//positionOfNonWhiteSpaceCharInBack keeps the count of whitespaces at the back
private void checkForWhiteSpaceInBack() {
boolean onlyWhiteSpaceSoFar = true;
positionOfNonWhiteSpaceCharInBack = 0;
for (int i = totalCharsSoFar; (i > stopDelimiterPosition) && onlyWhiteSpaceSoFar; i--) {
char currentChar = currentToken[i];
// replace test on \t,\n,' ' with String.trim's definition of white space
// i18n - check for whitespace - avoid doing a hard coded character
// check and use the isWhitespace method to cover all the Unicode
// options
if (Character.isWhitespace(currentChar)==true) {
if ((recordSepStartNotWhite || (currentChar != recordSeparatorChar0))
&&
(fieldSepStartNotWhite || (currentChar != fieldSeparatorChar0)))
//disregard if whitespace char is same as separator first char
positionOfNonWhiteSpaceCharInBack++;
} else
onlyWhiteSpaceSoFar = false;
}
}
//keep looking for field and record separators simultaneously because we don't yet
//know how many columns make up a row in this data file. Stop as soon as we get
//the record separator which is indicated by a return value of true from this function
boolean readTokensUntilEndOfRecord() throws Exception {
int nextChar;
int fieldSeparatorIndex = 0;
int recordSeparatorIndex = 0;
fieldStopDelimiterIndex = 0;
fieldStartDelimiterIndex = 0;
totalCharsSoFar = 0;
//at the start of every new token, make white space in front count 0
positionOfNonWhiteSpaceCharInFront = 0;
foundStartDelimiter = false;
foundStartAndStopDelimiters = false;
numberOfCharsReadSoFar = 0;
while (true) {
nextChar = bufferedReader.read();
if (nextChar == -1)
return true;
numberOfCharsReadSoFar++;
//read the character into the token holder. If token holder reaches it's capacity,
//double it's capacity
currentToken[totalCharsSoFar++] = (char)nextChar;
//check if character read is white space char in front
checkForWhiteSpaceInFront();
if (totalCharsSoFar == currentTokenMaxSize) {
currentTokenMaxSize = currentTokenMaxSize * 2;
char[] tempArray = new char[currentTokenMaxSize];
System.arraycopy(currentToken, 0, tempArray, 0, totalCharsSoFar);
currentToken = tempArray;
}
//see if we can find fieldSeparator
fieldSeparatorIndex = lookForPassedSeparator(fieldSeparator,
fieldSeparatorIndex,
fieldSeparatorLength,
nextChar, false);
//every time we find a column separator, the return false will indicate that count
//this token as column data value and keep lookin for more tokens or record
//separator
if (fieldSeparatorIndex == -1)
return false;
//if found start delimiter, then don't look for record separator, just look for
//end delimiter
if (!foundStartDelimiter ) {
//see if we can find recordSeparator
recordSeparatorIndex = lookForPassedSeparator(recordSeparator, recordSeparatorIndex,
recordSeparatorLength, nextChar, true);
if (recordSeparatorIndex == -1)
return true;
}
}
}
//if not inside a start delimiter, then look for the delimiter passed
//else look for stop delimiter first.
//this routine returns -1 if it finds field delimiter or record delimiter
private int lookForPassedSeparator(char[] delimiter, int delimiterIndex,
int delimiterLength, int nextChar,
boolean lookForRecordSeperator) throws
IOException
{
//foundStartDelimiter will be false if we haven't found a start delimiter yet
//if we haven't found startdelimiter, then we look for both start delimiter
//and passed delimiter(which can be field or record delimiter). If we do find
//start delimiter, then we only look for stop delimiter and not the passed delimiter.
if (!foundStartDelimiter ) {
//look for start delimiter only if it's length is non-zero and only if haven't already
//found it at all so far.
if (fieldStartDelimiterLength != 0 && (!foundStartAndStopDelimiters) ) {
//the code inside following if will be executed only if we have gone past all the
//white characters in the front.
if (totalCharsSoFar != positionOfNonWhiteSpaceCharInFront &&
(totalCharsSoFar - positionOfNonWhiteSpaceCharInFront) <= fieldStartDelimiterLength) {
//After getting rid of white spaces in front, look for the start delimiter. If
//found, set foundStartDelimiter flag.
if (nextChar == fieldStartDelimiter[fieldStartDelimiterIndex]){
fieldStartDelimiterIndex++;
if (fieldStartDelimiterIndex == fieldStartDelimiterLength) {
foundStartDelimiter = true;
//since characters read so far are same as start delimiters, discard those chars
totalCharsSoFar = 0;
positionOfNonWhiteSpaceCharInFront = 0;
return 0;
}
} else {
//found a mismatch for the start delimiter
//see if found match for more than one char of this start delimiter before the
//current mismatch, if so check the remaining chars agains
//eg if stop delimiter is xa and data is xxa
if (fieldStartDelimiterIndex > 0) {
reCheckRestOfTheCharacters(totalCharsSoFar-fieldStartDelimiterIndex,
fieldStartDelimiter, fieldStartDelimiterLength);
}
}
}
}
/*look for typical record seperators line feed (\n), a carriage return
* (\r) or a carriage return followed by line feed (\r\n)
*/
if(lookForRecordSeperator)
{
if(nextChar == '\r' || nextChar == '\n')
{
recordSeparatorChar0 = (char) nextChar;
if(nextChar == '\r' )
{
//omot the line feed character if it exists in the stream
omitLineFeed();
}
totalCharsSoFar = totalCharsSoFar - 1 ;
return -1;
}
return delimiterIndex;
}
//look for passed delimiter
if (nextChar == delimiter[delimiterIndex]) {
delimiterIndex++;
if (delimiterIndex == delimiterLength) { //found passed delimiter
totalCharsSoFar = totalCharsSoFar - delimiterLength;
return -1;
}
return delimiterIndex; //this number of chars of delimiter have exact match so far
} else {
//found a mismatch for the delimiter
//see if found match for more than one char of this delimiter before the
//current mismatch, if so check the remaining chars agains
//eg if delimiter is xa and data is xxa
if (delimiterIndex > 0)
return(reCheckRestOfTheCharacters(totalCharsSoFar-delimiterIndex,
delimiter,
delimiterLength));
}
} else {
//see if we can find fieldStopDelimiter
if (nextChar == fieldStopDelimiter[fieldStopDelimiterIndex]) {
fieldStopDelimiterIndex++;
if (fieldStopDelimiterIndex == fieldStopDelimiterLength) {
boolean skipped = skipDoubleDelimiters(fieldStopDelimiter);
if(!skipped)
{
foundStartDelimiter = false;
//found stop delimiter, discard the chars corresponding to stop delimiter
totalCharsSoFar = totalCharsSoFar - fieldStopDelimiterLength;
//following is to take care of a case like "aa"aa This will result in an
//error. Also a case like "aa" will truncate it to just aa
stopDelimiterPosition = totalCharsSoFar;
//following is used to distinguish between empty string ,"", and null string ,,
foundStartAndStopDelimiters = true;
}else
{
fieldStopDelimiterIndex =0 ;
}
return 0;
}
return 0;
} else {
//found a mismatch for the stop delimiter
//see if found match for more than one char of this stop delimiter before the
//current mismatch, if so check the remaining chars agains
//eg if stop delimiter is xa and data is xxa
if (fieldStopDelimiterIndex > 0) {
reCheckRestOfTheCharacters(totalCharsSoFar-fieldStopDelimiterIndex,
fieldStopDelimiter, fieldStopDelimiterLength);
return 0;
}
}
}
return 0;
}
//If after finding a few matching characters for a delimiter, find a mismatch,
//restart the matching process from character next to the one from which you
//were in the process of finding the matching pattern
private int reCheckRestOfTheCharacters(int startFrom,
char[] delimiter, int delimiterLength) {
int delimiterIndex = 0;
// alc: need to test delim of abab with abaabab
// if delimIndex resets to 0, i probably needs to reset to
// (an ever increasing) startFrom=startFrom+1, not stay where it is
for (int i = startFrom; i<totalCharsSoFar; i++) {
if (currentToken[i] == delimiter[delimiterIndex])
delimiterIndex++;
else
delimiterIndex = 0;
}
return delimiterIndex;
}
/*
* skips the duplicate delimeter characters inserd character stringd ata
* to get the original string. In Double Delimter recognigation Delimiter
* Format strings are written with a duplicate delimeter if a delimiter is
* found inside the data while exporting.
* For example with double quote(") as character delimiter
*
* "What a ""nice""day!"
*
* will be imported as:
*
* What a "nice"day!
*
* In the case of export, the rule applies in reverse. For example,
*
* I am 6"tall.
*
* will be exported to a file as:
*
* "I am 6""tall."
*/
private boolean skipDoubleDelimiters(char [] characterDelimiter) throws IOException
{
boolean skipped = true;
int cDelLength = characterDelimiter.length ;
bufferedReader.mark(cDelLength);
for(int i = 0 ; i < cDelLength ; i++)
{
int nextChar = bufferedReader.read();
if(nextChar != characterDelimiter[i])
{
//not a double delimter case
bufferedReader.reset();
skipped = false;
break;
}
}
return skipped;
}
//omit the line feed character(\n)
private void omitLineFeed() throws IOException
{
bufferedReader.mark(1);
int nextChar = bufferedReader.read();
if(nextChar != '\n')
{
//not a Line Feed
bufferedReader.reset();
}
}
/**returns the number of the current row
*/
int getCurrentRowNumber() {
return lineNumber;
}
/**the way we read the next row from input file depends on it's format
* @exception Exception if there is an error
*/
boolean readNextRow(String[] returnStringArray) throws Exception {
boolean readVal;
int idx;
if (!streamOpenForReading) {
openFile();
//as earlier, ignore the first row if it's colum definition
//do uppercase because the ui shows the values as True and False
if (hasColumnDefinition){
ignoreFirstRow();
}
}
if (formatCode == DEFAULT_FORMAT_CODE)
readVal=readNextDelimitedRow(returnStringArray);
else
readVal=readNextFixedRow(returnStringArray);
return readVal;
}
// made this a field so it isn't inited for each row, just
// set and cleared on the rows that need it (the last row
// in a file, typically, so it isn't used much)
private boolean haveSep = true;
//read the specified column width for each column
private boolean readNextFixedRow(String[] returnStringArray) throws Exception {
// readLength is how many bytes it has read so far
int readLength = 0;
int totalLength = 0;
// keep reading until rolWidth bytes have been read
while ((readLength +=
bufferedReader.read(tempString, readLength,
rowWidth-readLength))
< rowWidth) {
if (readLength == totalLength-1) {// EOF
if ( readLength == -1) { // no row, EOF
return false;
}
else {
// it's only a bad read if insufficient data was
// returned; missing the last record separator is ok
if (totalLength != rowWidth - recordSeparator.length) {
throw LoadError.unexpectedEndOfFile(lineNumber+1);
}
else {
haveSep = false;
break;
}
}
}
// else, some thing is read, continue until the whole column is
// read
totalLength = readLength;
}
int colStart = 0;
for (int i=0; i< numberOfColumns; i++) {
int colWidth = columnWidths[i];
if (colWidth == 0) //if column width is 0, return null
returnStringArray[i] = null;
else {
// if found nullstring, return it as null value
String checkAgainstNullString = new String(tempString, colStart, colWidth);
if (checkAgainstNullString.trim().equals(nullString))
returnStringArray[i] = null;
else
returnStringArray[i] = checkAgainstNullString;
colStart += colWidth;
}
}
//if what we read is not recordSeparator, throw an exception
if (haveSep) {
for (int i=(recordSeparatorLength-1); i>=0; i--) {
if (tempString[colStart+i] != recordSeparator[i])
throw LoadError.recordSeparatorMissing(lineNumber+1);
}
} else haveSep = true; // reset for the next time, if any.
lineNumber++;
return true;
}
//by this time, we know number of columns that make up a row in this data file
//so first look for number of columns-1 field delimites and then look for record
//delimiter
private boolean readNextDelimitedRow(String[] returnStringArray) throws Exception {
int upperLimit = numberOfColumns-1; //reduce # field accesses
//no data in the input file for some reason
if (upperLimit < 0)
return false;
//look for number of columns - 1 field separators
for (int i = 0; i<upperLimit; i++) {
if (!readNextToken(fieldSeparator, 0, fieldSeparatorLength, false) ) {
if (i == 0) // still on the first check
return false;
else
throw LoadError.unexpectedEndOfFile(lineNumber+1);
}
//following is to take care of a case like "aa"aa This will result in an
//error. Also a case like "aa" will truncate it to just aa. valid blank
//chars are ' ' '\r' '\t'
if (stopDelimiterPosition!=0 && ((stopDelimiterPosition) != totalCharsSoFar)) {
for (int k=stopDelimiterPosition+1; k<totalCharsSoFar; k++) {
// alc: should change || to && since || case is never true --
// currentChar can't be three different things at once.
// alc: why no \n? BTW, \r and \n should be replaced
// or amended with the first char of line.separator...
//char currentChar = currentToken[k];
//if (currentChar != ' ' && currentChar != '\r' && currentChar != '\t')
// use String.trim()'s definition of whitespace.
// i18n - check for whitespace - avoid doing a hard coded
// character check and use the isWhitespace method to cover all
// the Unicode options
if (Character.isWhitespace(currentToken[k])==false) {
throw LoadError.dataAfterStopDelimiter(lineNumber+1, i+1);
}
}
totalCharsSoFar = stopDelimiterPosition;
}
//totalCharsSoFar can become -1 in readNextToken
if (totalCharsSoFar != -1) {
returnStringArray[i] = new String(currentToken,
positionOfNonWhiteSpaceCharInFront, totalCharsSoFar);
}
else
returnStringArray[i] = null;
}
//look for record separator for the last column's value
//if I find endoffile and the it's only one column table, then it's a valid endoffile
//case. Otherwise, it's an error case. Without the following check for the return value
//of readNextToken, import was going into infinite loop for a table with single column
//import. end-of-file was getting ignored without the following if.
if (!readNextToken(recordSeparator, 0, recordSeparatorLength, true) ) {
if (upperLimit == 0)
return false;
else
throw LoadError.unexpectedEndOfFile(lineNumber+1);
}
//following is to take care of a case like "aa"aa This will result in an
//error. Also a case like "aa" will truncate it to just aa. valid blank
//chars are ' ' '\r' '\t'
if (stopDelimiterPosition!=0 && (stopDelimiterPosition != totalCharsSoFar)) {
for (int i=stopDelimiterPosition+1; i<totalCharsSoFar; i++) {
// alc: should change || to && since || case is never true --
// currentChar can't be three different things at once.
// alc: why no \n? BTW, \r and \n should be replaced
// or amended with the first char of line.separator...
//char currentChar = currentToken[i];
//if (currentChar != ' ' && currentChar != '\r' && currentChar != '\t')
// use String.trim()'s definition of whitespace.
// i18n - check for whitespace - avoid doing a hard coded character
// check and use the isWhitespace method to cover all the Unicode
// options
if (Character.isWhitespace(currentToken[i])==false) {
throw LoadError.dataAfterStopDelimiter(lineNumber+1, numberOfColumns);
}
}
totalCharsSoFar = stopDelimiterPosition;
}
//to be able to read delimited files that have a delimeter at the end,
//we have to reduce totalCharsSoFar by one when it is last column.
//Otherwise last delimeter becomes part of the data.
if (hasDelimiterAtEnd) {
if (!(fieldStopDelimiterLength > 0)) { //if there is no field stop delimeter specified,
//hopefully fieldStopDelimiterLength will not be >0
//there is weird behavior in the code that makes it read the last
//delimeter as part of the last column data, so this forces us to
//reduce number of read chars only if there is data stop delimeter
//Only if it is the last column:
//if (fieldStopDelimiter==null){
--totalCharsSoFar;
//}
}
}
if (totalCharsSoFar > -1) {
/* This is a hack to fix a problem: When there is missing data in columns
and hasDelimiterAtEnd==true, then the last delimiter was read as the last column data.
Hopefully this will tackle that issue by skipping the last column which is in this case
just the delimiter.
We need to be careful about the case when the last column data itself is
actually same as the delimiter.
*/
if (!hasDelimiterAtEnd) {//normal path:
returnStringArray[upperLimit] = new String(currentToken,
positionOfNonWhiteSpaceCharInFront, totalCharsSoFar);
}
else if (totalCharsSoFar==fieldSeparatorLength && isFieldSep(currentToken) ){
//means hasDelimiterAtEnd==true and all of the above are true
String currentStr = new String(currentToken,
positionOfNonWhiteSpaceCharInFront, totalCharsSoFar);
if (currentToken[totalCharsSoFar+1]==fieldStopDelimiter[0]){
returnStringArray[upperLimit] = currentStr;
}
else {
returnStringArray[upperLimit] = null;
}
}
else {
//means hasDelimiterAtEnd==true and previous case is wrong.
if (totalCharsSoFar>0) {
returnStringArray[upperLimit] = new String(currentToken,
positionOfNonWhiteSpaceCharInFront, totalCharsSoFar);
}
else{
returnStringArray[upperLimit] = null;
}
}
}
else
returnStringArray[upperLimit] = null;
lineNumber++;
return true;
}
//tells if a char array is field separator:
private boolean isFieldSep(char[] chrArray){
for (int i=0; i<chrArray.length && i<fieldSeparatorLength; i++){
if (chrArray[i]!=fieldSeparator[i])
return false;
}
return true;
}
//read one column's value at a time
boolean readNextToken(char[] delimiter, int delimiterIndex,
int delimiterLength,
boolean isRecordSeperator) throws Exception {
int nextChar;
fieldStopDelimiterIndex = 0;
fieldStartDelimiterIndex = 0;
totalCharsSoFar = 0;
//at the start of every new token, make white space in front count 0
positionOfNonWhiteSpaceCharInFront = 0;
stopDelimiterPosition = 0;
foundStartAndStopDelimiters = false;
foundStartDelimiter = false;
int returnValue;
while (true) {
nextChar = bufferedReader.read();
if (nextChar == -1) //end of file
return false;
//read the character into the token holder. If token holder reaches it's capacity,
//double it's capacity
currentToken[totalCharsSoFar++] = (char)nextChar;
//check if character read is white space char in front
checkForWhiteSpaceInFront();
if (totalCharsSoFar == currentTokenMaxSize) {
currentTokenMaxSize = currentTokenMaxSize * 2;
char[] tempArray = new char[currentTokenMaxSize];
System.arraycopy(currentToken, 0, tempArray, 0, totalCharsSoFar);
currentToken = tempArray;
}
returnValue = lookForPassedSeparator(delimiter, delimiterIndex,
delimiterLength, nextChar,
isRecordSeperator);
if (returnValue == -1) {
//if no stop delimiter found that "" this means null
//also if no stop delimiter found then get rid of spaces around the token
if (!foundStartAndStopDelimiters ) {
if (totalCharsSoFar == 0)
totalCharsSoFar = -1;
else {
//get the count of white spaces from back and subtract that and white spaces in
//the front from the characters read so far so that we ignore spaces around the
//token.
checkForWhiteSpaceInBack();
totalCharsSoFar = totalCharsSoFar - positionOfNonWhiteSpaceCharInFront - positionOfNonWhiteSpaceCharInBack;
}
}
return true;
}
delimiterIndex = returnValue;
}
}
/* following are the routines that are used to read lob data stored
* in a external import file for clob/blob columns, the reference
* to external file is stored in the main import file.
*/
/**
* Returns a clob columnn data stored at the specified location.
* @param lobLocationStr location of the clob data.
* @param colIndex number of the column. starts at 1.
* @exception SQLException on any errors.
*/
String getClobColumnFromExtFileAsString(String lobLocationStr, int colIndex)
throws SQLException
{
try {
initExternalLobFile(lobLocationStr, colIndex);
if (lobLength == -1 ){
// lob length -1 indicates columnn value is a NULL,
// just return null.
return null;
} else {
return lobFileHandles[colIndex-1].getString(lobOffset,lobLength);
}
}catch(Exception ex) {
throw LoadError.unexpectedError(ex);
}
}
/**
* Returns a clob columnn data stored at the specified location as
* a java.sql.Clob object.
* @param lobLocationStr location of the clob data.
* @param colIndex number of the column. starts at 1.
* @exception SQLException on any errors.
*/
java.sql.Clob getClobColumnFromExtFile(String lobLocationStr, int colIndex)
throws SQLException
{
try {
initExternalLobFile(lobLocationStr, colIndex);
if (lobLength == -1 ){
// lob length -1 indicates columnn value is a NULL,
// just return null.
return null;
} else {
return new ImportClob(lobFileHandles[colIndex -1],
lobOffset,lobLength);
}
}catch(Exception ex) {
throw LoadError.unexpectedError(ex);
}
}
/**
* Returns a blob columnn data stored at the specified location as
* a java.sql.Blob object.
* @param lobLocationStr location of the clob data.
* @param colIndex number of the column. starts at 1.
* @exception SQLException on any errors.
*/
java.sql.Blob getBlobColumnFromExtFile(String lobLocationStr, int colIndex)
throws SQLException
{
initExternalLobFile(lobLocationStr, colIndex);
if (lobLength == -1) {
// lob length -1 indicates columnn value is a NULL,
// just return null.
return null;
}
else {
return new ImportBlob(lobFileHandles[colIndex -1],
lobOffset, lobLength);
}
}
/**
* Extract the file name, offset and length from the given lob
* location and setup the file resources to read the data from
* the file on first invocaton.
*
* @param lobLocationStr location of the clob data.
* @param colIndex number of the column. starts at 1.
* @exception SQLException on any errors.
*/
private void initExternalLobFile(String lobLocationStr, int colIndex)
throws SQLException
{
// extract file name, offset, and the length from the
// given lob location. Lob location string format is
// <code > <fileName>.<lobOffset>.<size of lob>/ </code>.
// For a NULL blob, size will be -1
int lengthIndex = lobLocationStr.lastIndexOf(".") ;
int offsetIndex = lobLocationStr.lastIndexOf(".",
lengthIndex -1);
lobLength = Integer.parseInt(lobLocationStr.substring(
lengthIndex + 1,
lobLocationStr.length() -1));
lobOffset = Integer.parseInt(lobLocationStr.substring(
offsetIndex+1,
lengthIndex));
lobFileName = lobLocationStr.substring(0 , offsetIndex);
if (lobFileHandles[colIndex-1] == null) {
// open external file where the lobs are stored.
try {
// each lob column in the table has it's own file handle.
// separate file handles are must, lob stream objects
// can not be reused until the whole row is inserted.
File lobsFile = new File (lobFileName);
if (lobsFile.getParentFile() == null) {
// lob file name is unqualified. lob file
// is expected to be in the same location as
// the import file.
lobsFile = new File((
new File(inputFileName)).getParentFile(),
lobFileName);
}
lobFileHandles[colIndex-1] = new ImportLobFile(lobsFile,
controlFileReader.getDataCodeset());
}catch(Exception ex) {
throw LoadError.unexpectedError(ex);
}
}
}
}
The table below shows all metrics for ImportReadData.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 130.00 | Number of blocks | |
| BLOCK_COMMENT | 55.00 | Number of block comment lines | |
| COMMENTS | 333.00 | Comment lines | |
| COMMENT_DENSITY | 0.68 | Comment density | |
| COMPARISONS | 90.00 | Number of comparison operators | |
| CYCLOMATIC | 144.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 41.00 | Comments in declarations | |
| DOC_COMMENT | 44.00 | Number of javadoc comment lines | |
| ELOC | 493.00 | Effective lines of code | |
| EXEC_COMMENTS | 82.00 | Comments in executable code | |
| EXITS | 57.00 | Procedure exits | |
| FUNCTIONS | 28.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 119.60 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 134.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 1.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 18.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 27.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 2.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 1.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 0.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 1.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 6.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 7.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 2.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 1.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 1.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 1.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 5.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 1.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 1.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 1.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 368.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 3.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 1.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 1.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 8.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 1070.00 | Number of lines in the source file | |
| LINE_COMMENT | 234.00 | Number of line comments | |
| LOC | 624.00 | Lines of code | |
| LOGICAL_LINES | 312.00 | Number of statements | |
| LOOPS | 15.00 | Number of loops | |
| NEST_DEPTH | 6.00 | Maximum nesting depth | |
| OPERANDS | 1055.00 | Number of operands | |
| OPERATORS | 2286.00 | Number of operators | |
| PARAMS | 27.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3341.00 | Halstead program length | |
| PROGRAM_VOCAB | 303.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 107.00 | Number of return points from functions | |
| SIZE | 41000.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 247.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 56.00 | Number of unique operators | |
| WHITESPACE | 113.00 | Number of whitespace lines | |