NoPutResultSetImpl.java
| Index Score | ||
|---|---|---|
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org.apache.derby.impl.sql.execute |
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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 | |
|---|---|---|
| JAVA0034 | JAVA0034 Missing braces in if statement |  |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0285 | JAVA0285 Dereference of potentially null variable | |
| LOOPS | Number of loops | |
| COMMENTS | Comment lines | |
| COMPARISONS | Number of comparison operators | |
| LINE_COMMENT | Number of line comments | |
| SIZE | Size of the file in bytes | |
| CYCLOMATIC | Cyclomatic complexity | |
| LINES | Number of lines in the source file | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| UNIQUE_OPERATORS | Number of unique operators | |
| EXEC_COMMENTS | Comments in executable code | |
| EXITS | Procedure exits | |
| DOC_COMMENT | Number of javadoc comment lines | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| RETURNS | Number of return points from functions | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| LOC | Lines of code | |
| UNIQUE_OPERANDS | Number of unique operands | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
/*
Derby - Class org.apache.derby.impl.sql.execute.NoPutResultSetImpl
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.sql.execute;
import org.apache.derby.iapi.error.StandardException;
import org.apache.derby.iapi.reference.SQLState;
import org.apache.derby.iapi.services.i18n.MessageService;
import org.apache.derby.iapi.services.io.FormatableBitSet;
import org.apache.derby.iapi.services.monitor.Monitor;
import org.apache.derby.iapi.services.sanity.SanityManager;
import org.apache.derby.iapi.services.stream.HeaderPrintWriter;
import org.apache.derby.iapi.sql.Activation;
import org.apache.derby.iapi.sql.ResultDescription;
import org.apache.derby.iapi.sql.conn.LanguageConnectionContext;
import org.apache.derby.iapi.sql.execute.ExecIndexRow;
import org.apache.derby.iapi.sql.execute.ExecRow;
import org.apache.derby.iapi.sql.execute.NoPutResultSet;
import org.apache.derby.iapi.sql.execute.TargetResultSet;
import org.apache.derby.iapi.store.access.Qualifier;
import org.apache.derby.iapi.store.access.RowLocationRetRowSource;
import org.apache.derby.iapi.store.access.RowSource;
import org.apache.derby.iapi.types.DataValueDescriptor;
import org.apache.derby.iapi.types.Orderable;
import org.apache.derby.iapi.types.RowLocation;
/**
* Abstract ResultSet with built in Activation support for operations that
* return rows but do not allow the caller to put data on output pipes. This
* implementation of ResultSet is meant to be overridden by subtypes in the
* execution engine. Its primary users will be DML operations that do not put
* data on output pipes, but simply return it due to being result sets
* themselves.
* <p>
* This abstract class does not define the entire ResultSet
* interface, but leaves the 'get' half of the interface
* for subtypes to implement. It is package-visible only,
* with its methods being public for exposure by its subtypes.
* <p>
*/
abstract class NoPutResultSetImpl
extends BasicNoPutResultSetImpl
{
/* Set in constructor and not modified */
public final int resultSetNumber;
// fields used when being called as a RowSource
private boolean needsRowLocation;
protected ExecRow clonedExecRow;
protected TargetResultSet targetResultSet;
/* beetle 4464. compact flags into array of key column positions that we do check/skip nulls,
* so that we burn less cycles for each row, column.
*/
protected int[] checkNullCols;
protected int cncLen;
/**
* Constructor
*
* @param activation The activation
* @param resultSetNumber The resultSetNumber
* @param optimizerEstimatedRowCount The optimizer's estimated number
* of rows.
* @param optimizerEstimatedCost The optimizer's estimated cost
*/
NoPutResultSetImpl(Activation activation,
int resultSetNumber,
double optimizerEstimatedRowCount,
double optimizerEstimatedCost)
{
super(activation,
optimizerEstimatedRowCount,
optimizerEstimatedCost);
if (SanityManager.DEBUG) {
SanityManager.ASSERT(activation!=null, "activation expected to be non-null");
SanityManager.ASSERT(resultSetNumber >= 0, "resultSetNumber expected to be >= 0");
}
this.resultSetNumber = resultSetNumber;
}
// NoPutResultSet interface
/**
Return my cursor name for JDBC. Can be null.
*/
public String getCursorName() {
String cursorName = activation.getCursorName();
if ((cursorName == null) && isForUpdate()) {
activation.setCursorName(activation.getLanguageConnectionContext().getUniqueCursorName());
cursorName = activation.getCursorName();
}
return cursorName;
}
/** @see NoPutResultSet#resultSetNumber() */
public int resultSetNumber() {
return resultSetNumber;
}
/**
Close needs to invalidate any dependent statements, if this is a cursor.
Must be called by any subclasses that override close().
@exception StandardException on error
*/
public void close() throws StandardException
{
if (!isOpen)
return;
/* If this is the top ResultSet then we must
* close all of the open subqueries for the
* entire query.
*/
if (isTopResultSet)
{
/*
** If run time statistics tracing is turned on, then now is the
** time to dump out the information.
*/
LanguageConnectionContext lcc = getLanguageConnectionContext();
if (lcc.getRunTimeStatisticsMode())
{
endExecutionTime = getCurrentTimeMillis();
lcc.setRunTimeStatisticsObject(
lcc.getLanguageConnectionFactory().getExecutionFactory().getResultSetStatisticsFactory().getRunTimeStatistics(activation, this, subqueryTrackingArray));
HeaderPrintWriter istream = lcc.getLogQueryPlan() ? Monitor.getStream() : null;
if (istream != null)
{
istream.printlnWithHeader(LanguageConnectionContext.xidStr +
lcc.getTransactionExecute().getTransactionIdString() +
"), " +
LanguageConnectionContext.lccStr +
lcc.getInstanceNumber() +
"), " +
lcc.getRunTimeStatisticsObject().getStatementText() + " ******* " +
lcc.getRunTimeStatisticsObject().getStatementExecutionPlanText());
}
}
int staLength = (subqueryTrackingArray == null) ? 0 :
subqueryTrackingArray.length;
for (int index = 0; index < staLength; index++)
{
if (subqueryTrackingArray[index] == null)
{
continue;
}
if (subqueryTrackingArray[index].isClosed())
{
continue;
}
subqueryTrackingArray[index].close();
}
}
isOpen = false;
}
/** @see NoPutResultSet#setTargetResultSet */
public void setTargetResultSet(TargetResultSet trs)
{
targetResultSet = trs;
}
/** @see NoPutResultSet#setNeedsRowLocation */
public void setNeedsRowLocation(boolean needsRowLocation)
{
this.needsRowLocation = needsRowLocation;
}
// RowSource interface
/**
* @see RowSource#getValidColumns
*/
public FormatableBitSet getValidColumns()
{
// All columns are valid
return null;
}
/**
* @see RowSource#getNextRowFromRowSource
* @exception StandardException on error
*/
public DataValueDescriptor[] getNextRowFromRowSource()
throws StandardException
{
ExecRow execRow = getNextRowCore();
if (execRow != null)
{
/* Let the target preprocess the row. For now, this
* means doing an in place clone on any indexed columns
* to optimize cloning and so that we don't try to drain
* a stream multiple times. This is where we also
* enforce any check constraints.
*/
clonedExecRow = targetResultSet.preprocessSourceRow(execRow);
return execRow.getRowArray();
}
return null;
}
/**
* @see RowSource#needsToClone
*/
public boolean needsToClone()
{
return(true);
}
/**
* @see RowSource#closeRowSource
*/
public void closeRowSource()
{
// Do nothing here - actual work will be done in close()
}
// RowLocationRetRowSource interface
/**
* @see RowLocationRetRowSource#needsRowLocation
*/
public boolean needsRowLocation()
{
return needsRowLocation;
}
/**
* @see RowLocationRetRowSource#rowLocation
* @exception StandardException on error
*/
public void rowLocation(RowLocation rl)
throws StandardException
{
targetResultSet.changedRow(clonedExecRow, rl);
}
// class implementation
/**
* Clear the Orderable cache for each qualifier.
* (This should be done each time a scan/conglomerate with
* qualifiers is reopened.)
*
* @param qualifiers The Qualifiers to clear
*/
protected void clearOrderableCache(Qualifier[][] qualifiers) throws StandardException
{
// Clear the Qualifiers's Orderable cache
if (qualifiers != null)
{
Qualifier qual;
for (int term = 0; term < qualifiers.length; term++)
{
for (int index = 0; index < qualifiers[term].length; index++)
{
qual = qualifiers[term][index];
qual.clearOrderableCache();
/* beetle 4880 performance enhancement and avoid deadlock while pushing
* down method call to store: pre-evaluate.
*/
if (((GenericQualifier) qual).variantType != Qualifier.VARIANT)
qual.getOrderable(); // ignore return value
}
}
}
}
/**
* Set the current row to the row passed in.
*
* @param row the new current row
*
*/
public final void setCurrentRow(ExecRow row)
{
activation.setCurrentRow(row, resultSetNumber);
currentRow = row;
}
/**
* Clear the current row
*
*/
public final void clearCurrentRow()
{
currentRow = null;
activation.clearCurrentRow(resultSetNumber);
}
/**
* Is this ResultSet or it's source result set for update
* This method will be overriden in the inherited Classes
* if it is true
* @return Whether or not the result set is for update.
*/
public boolean isForUpdate()
{
return false;
}
/**
* Return true if we should skip the scan due to nulls in the start
* or stop position when the predicate on the column(s) in question
* do not implement ordered null semantics. beetle 4464, we also compact
* the areNullsOrdered flags into checkNullCols here.
*
* @param startPosition An index row for the start position
* @param stopPosition An index row for the stop position
*
* @return true means not to do the scan
*/
protected boolean skipScan(ExecIndexRow startPosition, ExecIndexRow stopPosition)
throws StandardException
{
int nStartCols = (startPosition == null) ? 0 : startPosition.nColumns();
int nStopCols = (stopPosition == null) ? 0 : stopPosition.nColumns();
/* Two facts 1) for start and stop key column positions, one has to be the prefix
* of the other, 2) startPosition.areNullsOrdered(i) can't be different from
* stopPosition.areNullsOrdered(i) unless the case "c > null and c < 5", (where c is
* non-nullable), in which we skip the scan anyway.
* So we can just use the longer one to get checkNullCols.
*/
boolean startKeyLonger = false;
int size = nStopCols;
if (nStartCols > nStopCols)
{
startKeyLonger = true;
size = nStartCols;
}
if (size == 0)
return false;
if ((checkNullCols == null) || (checkNullCols.length < size))
checkNullCols = new int[size];
cncLen = 0;
boolean returnValue = false;
for (int position = 0; position < nStartCols; position++)
{
if ( ! startPosition.areNullsOrdered(position))
{
if (startKeyLonger)
checkNullCols[cncLen++] = position + 1;
if (startPosition.getColumn(position + 1).isNull())
{
returnValue = true;
if (! startKeyLonger)
break;
}
}
}
if (startKeyLonger && returnValue)
return true;
for (int position = 0; position < nStopCols; position++)
{
if ( ! stopPosition.areNullsOrdered(position))
{
if (! startKeyLonger)
checkNullCols[cncLen++] = position + 1;
if (returnValue)
continue;
if (stopPosition.getColumn(position + 1).isNull())
{
returnValue = true;
if (startKeyLonger)
break;
}
}
}
return returnValue;
}
/**
* Return true if we should skip the scan due to nulls in the row
* when the start or stop positioners on the columns containing
* null do not implement ordered null semantics.
*
* @param row An index row
*
* @return true means skip the row because it has null
*/
protected boolean skipRow(ExecRow row) throws StandardException
{
for (int i = 0; i < cncLen; i++)
{
if (row.getColumn(checkNullCols[i]).isNull())
return true;
}
return false;
}
/**
* Return a 2-d array of Qualifiers as a String
*/
public static String printQualifiers(Qualifier[][] qualifiers)
{
String idt = "";
String output = "";
if (qualifiers == null)
{
return idt + MessageService.getTextMessage(SQLState.LANG_NONE);
}
for (int term = 0; term < qualifiers.length; term++)
{
for (int i = 0; i < qualifiers[term].length; i++)
{
Qualifier qual = qualifiers[term][i];
output = idt + output +
MessageService.getTextMessage(
SQLState.LANG_COLUMN_ID_ARRAY,
String.valueOf(term), String.valueOf(i)) +
": " + qual.getColumnId() + "\n";
int operator = qual.getOperator();
String opString = null;
switch (operator)
{
case Orderable.ORDER_OP_EQUALS:
opString = "=";
break;
case Orderable.ORDER_OP_LESSOREQUALS:
opString = "<=";
break;
case Orderable.ORDER_OP_LESSTHAN:
opString = "<";
break;
default:
if (SanityManager.DEBUG)
{
SanityManager.THROWASSERT("Unknown operator " + operator);
}
// NOTE: This does not have to be internationalized, because
// this code should never be reached.
opString = "unknown value (" + operator + ")";
break;
}
output = output +
idt + MessageService.getTextMessage(SQLState.LANG_OPERATOR) +
": " + opString + "\n" +
idt +
MessageService.getTextMessage(
SQLState.LANG_ORDERED_NULLS) +
": " + qual.getOrderedNulls() + "\n" +
idt +
MessageService.getTextMessage(
SQLState.LANG_UNKNOWN_RETURN_VALUE) +
": " + qual.getUnknownRV() + "\n" +
idt +
MessageService.getTextMessage(
SQLState.LANG_NEGATE_COMPARISON_RESULT) +
": " + qual.negateCompareResult() + "\n";
}
}
return output;
}
/**
* @see NoPutResultSet#updateRow
*
* This method is result sets used for scroll insensitive updatable
* result sets for other result set it is a no-op.
*/
public void updateRow(ExecRow row) throws StandardException {
// Only ResultSets of type Scroll Insensitive implement
// detectability, so for other result sets this method
// is a no-op
}
/**
* @see NoPutResultSet#markRowAsDeleted
*
* This method is result sets used for scroll insensitive updatable
* result sets for other result set it is a no-op.
*/
public void markRowAsDeleted() throws StandardException {
// Only ResultSets of type Scroll Insensitive implement
// detectability, so for other result sets this method
// is a no-op
}
/**
* @see NoPutResultSet#positionScanAtRowLocation
*
* This method is result sets used for scroll insensitive updatable
* result sets for other result set it is a no-op.
*/
public void positionScanAtRowLocation(RowLocation rl)
throws StandardException
{
// Only ResultSets of type Scroll Insensitive implement
// detectability, so for other result sets this method
// is a no-op
}
}
The table below shows all metrics for NoPutResultSetImpl.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 46.00 | Number of blocks | |
| BLOCK_COMMENT | 47.00 | Number of block comment lines | |
| COMMENTS | 184.00 | Comment lines | |
| COMMENT_DENSITY | 0.90 | Comment density | |
| COMPARISONS | 50.00 | Number of comparison operators | |
| CYCLOMATIC | 68.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 31.00 | Comments in declarations | |
| DOC_COMMENT | 118.00 | Number of javadoc comment lines | |
| ELOC | 205.00 | Effective lines of code | |
| EXEC_COMMENTS | 12.00 | Comments in executable code | |
| EXITS | 46.00 | Procedure exits | |
| FUNCTIONS | 22.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 73.99 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 53.00 | 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 | 0.00 | 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 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 1.00 | 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 | 11.00 | 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 | 0.00 | 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 | 0.00 | 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 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 1.00 | 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 | 0.00 | 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 | 0.00 | 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 | 7.00 | 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 | 1.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 1.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 6.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 1.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | 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 | 844.00 | 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 | 0.00 | 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 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | 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 | 1.00 | 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 | 1.00 | 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 | 4.00 | 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 | 542.00 | Number of lines in the source file | |
| LINE_COMMENT | 19.00 | Number of line comments | |
| LOC | 295.00 | Lines of code | |
| LOGICAL_LINES | 121.00 | Number of statements | |
| LOOPS | 8.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 560.00 | Number of operands | |
| OPERATORS | 1067.00 | Number of operators | |
| PARAMS | 15.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1627.00 | Halstead program length | |
| PROGRAM_VOCAB | 244.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 38.00 | Number of return points from functions | |
| SIZE | 15878.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 193.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 51.00 | Number of unique operators | |
| WHITESPACE | 63.00 | Number of whitespace lines | |