DataType.java
| Index Score | ||
|---|---|---|
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org.apache.derby.iapi.types |
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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 | |
|---|---|---|
| DOC_COMMENT | Number of javadoc comment lines |  |
| COMMENTS | Comment lines | |
| DECL_COMMENTS | Comments in declarations | |
| RETURNS | Number of return points from functions | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| LINES | Number of lines in the source file | |
| SIZE | Size of the file in bytes | |
| FUNCTIONS | Number of function declarations | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| CYCLOMATIC | Cyclomatic complexity | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| LOC | Lines of code | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0106 | JAVA0106 Unnecessary import from current package | |
| BLOCKS | Number of blocks | |
| JAVA0285 | JAVA0285 Dereference of potentially null variable | |
| ELOC | Effective lines of code | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| JAVA0173 | JAVA0173 Unused method parameter | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| UNIQUE_OPERANDS | Number of unique operands | |
| OPERATORS | Number of operators | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERANDS | Number of operands | |
| UNIQUE_OPERATORS | Number of unique operators | |
| EXITS | Procedure exits | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| WHITESPACE | Number of whitespace lines | |
| COMPARISONS | Number of comparison operators | |
| LOGICAL_LINES | Number of statements | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| BLOCK_COMMENT | Number of block comment lines | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| LINE_COMMENT | Number of line comments | |
/*
Derby - Class org.apache.derby.iapi.types.DataType
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.iapi.types;
import org.apache.derby.iapi.types.DataValueDescriptor;
import org.apache.derby.iapi.types.DataTypeDescriptor;
import org.apache.derby.iapi.types.BooleanDataValue;
import org.apache.derby.iapi.types.CloneableObject;
import org.apache.derby.iapi.types.Orderable;
import org.apache.derby.iapi.reference.SQLState;
import org.apache.derby.iapi.error.StandardException;
import org.apache.derby.iapi.services.i18n.MessageService;
import org.apache.derby.iapi.services.sanity.SanityManager;
import org.apache.derby.iapi.services.i18n.LocaleFinder;
import java.io.InputStream;
import java.lang.Comparable;
import java.sql.Date;
import java.sql.Time;
import java.sql.Timestamp;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.ResultSet;
import java.util.Calendar;
/**
*
* DataType is the superclass for all data types.
* It provides common behavior
* for datavalue descriptors -- it throws
* exceptions for all of the get* and setvalue(*) methods of
* DataValueDescriptor; the subtypes need only
* override the one for the type they represent
* and all types it can also be returned as,
* and the methods dealing with nulls.
*
* Since all types satisfy getString
* DataType does not define that
* interfaces of DataValueDescriptor.
*
* DataType is a little glue for columns to hold
* values with.
*
*/
public abstract class DataType
implements DataValueDescriptor, CloneableObject, Comparable
{
/*
* DataValueDescriptor Interface
*/
/**
* Gets the value in the data value descriptor as a boolean.
* Throws an exception if the data value is not receivable as a boolean.
*
* @return The data value as a boolean.
*
* @exception StandardException Thrown on error
*/
public boolean getBoolean() throws StandardException
{
throw dataTypeConversion("boolean");
}
/**
* Gets the value in the data value descriptor as a byte.
* Throws an exception if the data value is not receivable as a byte.
*
* @return The data value as a byte.
*
* @exception StandardException Thrown on error
*/
public byte getByte() throws StandardException
{
throw dataTypeConversion("byte");
}
/**
* Gets the value in the data value descriptor as a short.
* Throws an exception if the data value is not receivable as a short.
*
* @return The data value as a short.
*
* @exception StandardException Thrown on error
*/
public short getShort() throws StandardException
{
throw dataTypeConversion("short");
}
/**
* Gets the value in the data value descriptor as a int.
* Throws an exception if the data value is not receivable as a int.
*
* @return The data value as a int.
*
* @exception StandardException Thrown on error
*/
public int getInt() throws StandardException
{
throw dataTypeConversion("int");
}
/**
* Gets the value in the data value descriptor as a long.
* Throws an exception if the data value is not receivable as a long.
*
* @return The data value as a long.
*
* @exception StandardException Thrown on error
*/
public long getLong() throws StandardException
{
throw dataTypeConversion("long");
}
/**
* Gets the value in the data value descriptor as a float.
* Throws an exception if the data value is not receivable as a float.
*
* @return The data value as a float.
*
* @exception StandardException Thrown on error
*/
public float getFloat() throws StandardException
{
throw dataTypeConversion("float");
}
/**
* Gets the value in the data value descriptor as a double.
* Throws an exception if the data value is not receivable as a double.
*
* @return The data value as a double.
*
* @exception StandardException Thrown on error
*/
public double getDouble() throws StandardException
{
throw dataTypeConversion("double");
}
public int typeToBigDecimal() throws StandardException
{
throw dataTypeConversion("java.math.BigDecimal");
}
/**
* Gets the value in the data value descriptor as a byte[].
* Throws an exception if the data value is not receivable as a Binary or Varbinary.
*
* @return The Binary value as a byte[].
*
* @exception StandardException Thrown on error
*/
public byte[] getBytes() throws StandardException
{
throw dataTypeConversion("byte[]");
}
/**
* Gets the value in the data value descriptor as a java.sql.Date.
* Throws an exception if the data value is not receivable as a Date.
* @param cal calendar for object creation
* @return The data value as a java.sql.Date.
*
* @exception StandardException Thrown on error
*/
public Date getDate( Calendar cal) throws StandardException
{
throw dataTypeConversion("java.sql.Date");
}
/**
* Gets the value in the data value descriptor as a java.sql.Time.
* Throws an exception if the data value is not receivable as a Time.
* @param cal calendar for object creation
* @return The data value as a java.sql.Time.
*
* @exception StandardException Thrown on error
*/
public Time getTime( Calendar cal) throws StandardException
{
throw dataTypeConversion("java.sql.Time");
}
/**
* Gets the value in the data value descriptor as a java.sql.Timestamp.
* Throws an exception if the data value is not receivable as a Timestamp.
* @param cal calendar for object creation
* @return The data value as a java.sql.Timestamp.
*
* @exception StandardException Thrown on error
*/
public Timestamp getTimestamp( Calendar cal) throws StandardException
{
throw dataTypeConversion("java.sql.Timestamp");
}
/**
* Gets the value in the data stream descriptor as an InputStream.
* Throws an exception if the data value is not receivable as a stream.
*
* @return The data value as an InputStream.
*
* @exception StandardException Thrown on error
*/
public InputStream getStream() throws StandardException
{
throw dataTypeConversion(
MessageService.getTextMessage(SQLState.LANG_STREAM));
}
/**
* Gets the value in the data stream descriptor as a trace string.
* This default implementation simply forwards the call to
* <code>getString</code>.
*
* @return The data value in a representation suitable for tracing.
* @throws StandardException if getting the data value fails.
* @see DataValueDescriptor#getString
*/
public String getTraceString() throws StandardException {
return getString();
}
/**
* Recycle this DataType object.
*
* @return this object with value set to null
*/
public DataValueDescriptor recycle() {
restoreToNull();
return this;
}
/*
* Column interface
*/
/**
* The is null operator as called from the language module, as opposed to
* the storage module.
*
*
* @return A SQL boolean value telling whether the operand is null
*
*/
public final BooleanDataValue isNullOp()
{
return SQLBoolean.truthValue(isNull());
}
/**
* The is not null operator as called from the language module, as opposed to
* the storage module.
*
*
* @return A SQL boolean value telling whether the operand is not null
*
*/
public final BooleanDataValue isNotNull()
{
return SQLBoolean.truthValue(!isNull());
}
/**
* Set the value of this DataValueDescriptor.
* At DataType level just throws an error lower classes will override
*
* @param theValue The Time value to set this DataValueDescriptor to
*/
public void setValue(Time theValue) throws StandardException
{
setValue( theValue, (Calendar) null);
}
/**
* Set the value of this DataValueDescriptor.
* At DataType level just throws an error lower classes will override
*
* @param theValue The Time value to set this DataValueDescriptor to
* @param cal The time zone from the calendar is used to construct the database time value
*/
public void setValue(Time theValue, Calendar cal) throws StandardException
{
throwLangSetMismatch("java.sql.Time");
}
/**
* Set the value of this DataValueDescriptor.
* At DataType level just throws an error lower classes will override
*
* @param theValue The Timestamp value to set this DataValueDescriptor to
*/
public void setValue(Timestamp theValue) throws StandardException
{
setValue( theValue, (Calendar) null);
}
/**
* Set the value of this DataValueDescriptor.
* At DataType level just throws an error lower classes will override
*
* @param theValue The Timestamp value to set this DataValueDescriptor to
* @param cal The time zone from the calendar is used to construct the database timestamp value
*/
public void setValue(Timestamp theValue, Calendar cal) throws StandardException
{
throwLangSetMismatch("java.sql.Timestamp");
}
/**
* Set the value of this DataValueDescriptor.
* At DataType level just throws an error lower classes will override
*
* @param theValue The Date value to set this DataValueDescriptor to
*/
public void setValue(Date theValue) throws StandardException
{
setValue( theValue, (Calendar) null);
}
/**
* Set the value of this DataValueDescriptor.
* At DataType level just throws an error lower classes will override
*
* @param theValue The Date value to set this DataValueDescriptor to
* @param cal The time zone from the calendar is used to construct the database date value
*/
public void setValue(Date theValue, Calendar cal) throws StandardException
{
throwLangSetMismatch("java.sql.Date");
}
/**
* Set the value of this DataValueDescriptor.
* At DataType level just throws an error lower classes will override
*
* @param theValue The BigDecimal value to set this DataValueDescriptor to
*/
public void setValue(String theValue) throws StandardException
{
throwLangSetMismatch("java.lang.String");
}
/**
* Set the value of this DataValueDescriptor to the given int value
* At DataType level just throws an error lower classes will override
*
* @param theValue The value to set this DataValueDescriptor to
*
* @exception StandardException Thrown on error
*/
public void setValue(int theValue) throws StandardException
{
throwLangSetMismatch("int");
}
/**
* Set the value of this DataValueDescriptor to the given double value
* At DataType level just throws an error lower classes will override
*
* @param theValue The value to set this DataValueDescriptor to
*
* @exception StandardException Thrown on error
*/
public void setValue(double theValue) throws StandardException
{
throwLangSetMismatch("double");
}
/**
* Set the value of this DataValueDescriptor to the given float value
* At DataType level just throws an error lower classes will override
*
* @param theValue The value to set this DataValueDescriptor to
*
* @exception StandardException Thrown on error
*/
public void setValue(float theValue) throws StandardException
{
throwLangSetMismatch("float");
}
/**
* Set the value of this DataValueDescriptor to the given short value
* At DataType level just throws an error lower classes will override
*
* @param theValue The value to set this DataValueDescriptor to
*
* @exception StandardException Thrown on error
*/
public void setValue(short theValue) throws StandardException
{
throwLangSetMismatch("short");
}
/**
* Set the value of this DataValueDescriptor to the given long value
* At DataType level just throws an error lower classes will override
*
* @param theValue The value to set this DataValueDescriptor to
*
* @exception StandardException Thrown on error
*/
public void setValue(long theValue) throws StandardException
{
throwLangSetMismatch("long");
}
/**
* Set the value of this DataValueDescriptor to the given byte value
* At DataType level just throws an error lower classes will override
*
* @param theValue The value to set this DataValueDescriptor to
*
* @exception StandardException Thrown on error
*/
public void setValue(byte theValue) throws StandardException
{
throwLangSetMismatch("byte");
}
/**
* Set the value.
* At DataType level just throws an error lower classes will override
*
* @param theValue Contains the boolean value to set this to
*
*/
public void setValue(boolean theValue) throws StandardException
{
throwLangSetMismatch("boolean");
}
/**
* Set the value of this DataValueDescriptor.
* At DataType level just throws an error lower classes will override
*
* @param theValue The byte value to set this DataValueDescriptor to
*
*/
public void setValue(byte[] theValue) throws StandardException
{
throwLangSetMismatch("byte[]");
}
/**
Only to be called when the application sets a value using BigDecimal
*/
public void setBigDecimal(Number bigDecimal) throws StandardException
{
throwLangSetMismatch("java.math.BigDecimal");
}
public final void setValue(DataValueDescriptor dvd) throws StandardException {
if (dvd.isNull())
{
setToNull();
return;
}
try {
setFrom(dvd);
} catch (StandardException se) {
String msgId = se.getMessageId();
if (SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE.equals(msgId))
throw outOfRange();
if (SQLState.LANG_FORMAT_EXCEPTION.equals(msgId))
throw invalidFormat();
throw se;
}
}
/**
* Set the value of this DataValueDescriptor based on the value
* of the specified DataValueDescriptor.
*
* @param dvd The DataValueDescriptor that holds the value to
* which we want to set this DataValueDescriptor's value.
*
*/
protected void setFrom(DataValueDescriptor dvd) throws StandardException
{
throw StandardException.newException(SQLState.NOT_IMPLEMENTED);
}
/**
* @see DataValueDescriptor#setToNull
*/
public void setToNull()
{
restoreToNull();
}
/**
* @see DataValueDescriptor#setObjectForCast
*
* @exception StandardException
* thrown on failure
*
*/
public void setObjectForCast(Object theValue, boolean instanceOfResultType,
String resultTypeClassName) throws StandardException {
if (theValue == null)
{
setToNull();
return;
}
/*
* Is the object of the right type? (only do the check if value is
* non-null
*/
if (!instanceOfResultType) {
throw StandardException.newException(
SQLState.LANG_DATA_TYPE_SET_MISMATCH,
theValue.getClass().getName(), getTypeName(resultTypeClassName));
}
setObject(theValue);
}
/**
* Set the value from an non-null object. Usually overridden.
* This implementation throws an exception.
* The object will have been correctly typed from the call to setObjectForCast.
*/
void setObject(Object theValue)
throws StandardException
{
genericSetObject(theValue);
}
/**
* Get the type name of this value, possibly overriding
* with the passed in class name (for user/java types).
* @param className
*/
String getTypeName(String className)
{
return getTypeName();
}
/**
* Gets the value in the data value descriptor as a int.
* Throws an exception if the data value is not receivable as a int.
*
* @return The data value as a int.
*
* @exception StandardException Thrown on error
*/
public Object getObject() throws StandardException
{
throw dataTypeConversion("java.lang.Object");
}
void genericSetObject(Object theValue) throws StandardException {
throwLangSetMismatch(theValue);
}
/**
* From CloneableObject
*
* @return clone of me as an Object
*/
public Object cloneObject()
{
return getClone();
}
// International support
/**
* International version of getString(). Overridden for date, time,
* and timestamp in SQLDate, SQLTime, SQLTimestamp.
*
* @exception StandardException Thrown on error
*/
protected String getNationalString(LocaleFinder localeFinder) throws StandardException
{
return getString();
}
public void throwLangSetMismatch(Object value) throws StandardException {
throwLangSetMismatch(value.getClass().getName());
}
void throwLangSetMismatch(String argTypeName) throws StandardException
{
throw StandardException.newException(SQLState.LANG_DATA_TYPE_SET_MISMATCH,
argTypeName, this.getTypeName());
}
public void setInto(PreparedStatement ps, int position) throws SQLException, StandardException {
ps.setObject(position, getObject());
}
/**
Set this value into a ResultSet for a subsequent ResultSet.insertRow
or ResultSet.updateRow. This method will only be called for non-null values.
@exception SQLException thrown by the ResultSet object
@exception StandardException thrown by me accessing my value.
*/
public void setInto(ResultSet rs, int position) throws SQLException, StandardException {
rs.updateObject(position, getObject());
}
/**
* Default normalization method. No information needed from DataTypeDescriptor.
*
* @param desiredType The type to normalize the source column to
* @param source The value to normalize
*
*
* @exception StandardException Thrown normalization error.
*/
public void normalize(
DataTypeDescriptor desiredType,
DataValueDescriptor source)
throws StandardException
{
((DataValueDescriptor) this).setValue(source);
}
/**
* Each built-in type in JSQL has a precedence. This precedence determines
* how to do type promotion when using binary operators. For example, float
* has a higher precedence than int, so when adding an int to a float, the
* result type is float.
*
* The precedence for some types is arbitrary. For example, it doesn't
* matter what the precedence of the boolean type is, since it can't be
* mixed with other types. But the precedence for the number types is
* critical. The SQL standard requires that exact numeric types be
* promoted to approximate numeric when one operator uses both. Also,
* the precedence is arranged so that one will not lose precision when
* promoting a type.
*
* @return The precedence of this type.
*/
public int typePrecedence() {
return -1;
}
/**
* The = operator as called from the language module, as opposed to
* the storage module. This default implementations uses compare().
*
* @param left The value on the left side of the =
* @param right The value on the right side of the =
*
* @return A SQL boolean value telling whether the two parameters are equal
*
* @exception StandardException Thrown on error
*/
public BooleanDataValue equals(DataValueDescriptor left,
DataValueDescriptor right)
throws StandardException
{
return SQLBoolean.truthValue(left,
right,
left.compare(right) == 0);
}
/**
* The <> operator as called from the language module, as opposed to
* the storage module. This default implementations uses compare().
*
* @param left The value on the left side of the <>
* @param right The value on the right side of the <>
*
* @return A SQL boolean value telling whether the two parameters
* are not equal
*
* @exception StandardException Thrown on error
*/
public BooleanDataValue notEquals(DataValueDescriptor left,
DataValueDescriptor right)
throws StandardException
{
return SQLBoolean.truthValue(left,
right,
left.compare(right) != 0);
}
/**
* The < operator as called from the language module, as opposed to
* the storage module.
*
* @param left The value on the left side of the <
* @param right The value on the right side of the <
*
* @return A SQL boolean value telling whether the first operand is less
* than the second operand
*
* @exception StandardException Thrown on error
*/
public BooleanDataValue lessThan(DataValueDescriptor left,
DataValueDescriptor right)
throws StandardException
{
return SQLBoolean.truthValue(left,
right,
left.compare(right) < 0);
}
/**
* The > operator as called from the language module, as opposed to
* the storage module. This default implementations uses compare().
*
* @param left The value on the left side of the >
* @param right The value on the right side of the >
*
* @return A SQL boolean value telling whether the first operand is greater
* than the second operand
*
* @exception StandardException Thrown on error
*/
public BooleanDataValue greaterThan(DataValueDescriptor left,
DataValueDescriptor right)
throws StandardException
{
return SQLBoolean.truthValue(left,
right,
left.compare(right) > 0);
}
/**
* The <= operator as called from the language module, as opposed to
* the storage module. This default implementations uses compare().
*
* @param left The value on the left side of the <=
* @param right The value on the right side of the <=
*
* @return A SQL boolean value telling whether the first operand is less
* than or equal to the second operand
*
* @exception StandardException Thrown on error
*/
public BooleanDataValue lessOrEquals(DataValueDescriptor left,
DataValueDescriptor right)
throws StandardException
{
return SQLBoolean.truthValue(left,
right,
left.compare(right) <= 0);
}
/**
* The >= operator as called from the language module, as opposed to
* the storage module. This default implementation uses compare().
*
* @param left The value on the left side of the >=
* @param right The value on the right side of the >=
*
* @return A SQL boolean value telling whether the first operand is greater
* than or equal to the second operand
*
* @exception StandardException Thrown on error
*/
public BooleanDataValue greaterOrEquals(DataValueDescriptor left,
DataValueDescriptor right)
throws StandardException
{
return SQLBoolean.truthValue(left,
right,
left.compare(right) >= 0);
}
public boolean compare(int op,
DataValueDescriptor other,
boolean orderedNulls,
boolean unknownRV)
throws StandardException
{
/* Use compare method from dominant type, flipping the operator
* to reflect flipping of sides.
*/
if (typePrecedence() < other.typePrecedence())
{
return other.compare(flip(op), this, orderedNulls, unknownRV);
}
int result = compare(other);
switch(op)
{
case ORDER_OP_LESSTHAN:
return (result < 0); // this < other
case ORDER_OP_EQUALS:
return (result == 0); // this == other
case ORDER_OP_LESSOREQUALS:
return (result <= 0); // this <= other
// flipped operators
case ORDER_OP_GREATERTHAN:
return (result > 0); // this > other
case ORDER_OP_GREATEROREQUALS:
return (result >= 0); // this >= other
default:
if (SanityManager.DEBUG)
SanityManager.THROWASSERT("Invalid Operator");
return false;
}
}
/**
* Compare this Orderable with another, with configurable null ordering.
* The caller gets to determine how nulls
* should be treated - they can either be ordered values or unknown
* values. The caller also gets to decide, if they are ordered,
* whether they should be lower than non-NULL values, or higher
*
* @param op Orderable.ORDER_OP_EQUALS means do an = comparison.
* Orderable.ORDER_OP_LESSTHAN means compare this < other.
* Orderable.ORDER_OP_LESSOREQUALS means compare this <= other.
* @param other The DataValueDescriptor to compare this one to.
* @param orderedNulls True means to treat nulls as ordered values,
* that is, treat SQL null as equal to null, and either greater or less
* than all other values.
* False means to treat nulls as unknown values,
* that is, the result of any comparison with a null
* is the UNKNOWN truth value.
* @param nullsOrderedLow True means NULL less than non-NULL,
* false means NULL greater than non-NULL.
* Only relevant if orderedNulls is true.
* @param unknownRV The return value to use if the result of the
* comparison is the UNKNOWN truth value. In other
* words, if orderedNulls is false, and a null is
* involved in the comparison, return unknownRV.
* This parameter is not used orderedNulls is true.
*
* @return true if the comparison is true (duh!)
*
* @exception StandardException Thrown on error
*/
public boolean compare(int op,
DataValueDescriptor other,
boolean orderedNulls,
boolean nullsOrderedLow,
boolean unknownRV)
throws StandardException
{
/* Use compare method from dominant type, flipping the operator
* to reflect flipping of sides.
*/
if (typePrecedence() < other.typePrecedence())
{
return other.compare(flip(op), this, orderedNulls,
nullsOrderedLow, unknownRV);
}
int result = compare(other, nullsOrderedLow);
switch(op)
{
case ORDER_OP_LESSTHAN:
return (result < 0); // this < other
case ORDER_OP_EQUALS:
return (result == 0); // this == other
case ORDER_OP_LESSOREQUALS:
return (result <= 0); // this <= other
// flipped operators
case ORDER_OP_GREATERTHAN:
return (result > 0); // this > other
case ORDER_OP_GREATEROREQUALS:
return (result >= 0); // this >= other
default:
if (SanityManager.DEBUG)
SanityManager.THROWASSERT("Invalid Operator");
return false;
}
}
/**
* Compare this Orderable with another, with configurable null ordering.
* This method treats nulls as ordered values, but allows the caller
* to specify whether they should be lower than all non-NULL values,
* or higher than all non-NULL values.
*
* @param other The Orderable to compare this one to.
% @param nullsOrderedLow True if null should be lower than non-NULL
*
* @return <0 - this Orderable is less than other.
* 0 - this Orderable equals other.
* >0 - this Orderable is greater than other.
*
* The code should not explicitly look for -1, or 1.
*
* @exception StandardException Thrown on error
*/
public int compare(DataValueDescriptor other, boolean nullsOrderedLow)
throws StandardException
{
if (this.isNull() || other.isNull())
{
if (!isNull())
return nullsOrderedLow ? 1 : -1;
if (!other.isNull())
return nullsOrderedLow ? -1 : 1;
return 0; // both null
}
return compare(other);
}
/**
* Wrapper method for the "compare(DataValueDescriptor)" method of
* this class. Allows sorting of an array of DataValueDescriptors
* using the JVMs own sorting algorithm. Currently used for
* execution-time sorting of IN-list values to allow proper handling
* (i.e. elimination) of duplicates.
*
* @see java.lang.Comparable#compareTo
*/
public int compareTo(Object otherDVD)
{
DataValueDescriptor other = (DataValueDescriptor)otherDVD;
try {
// Use compare method from the dominant type.
if (typePrecedence() < other.typePrecedence())
return (-1 * other.compare(this));
return compare(other);
} catch (StandardException se) {
if (SanityManager.DEBUG)
{
SanityManager.THROWASSERT("Encountered error while " +
"trying to compare two DataValueDescriptors: " +
se.getMessage());
}
/* In case of an error in insane mode, just treat the
* values as "equal".
*/
return 0;
}
}
/**
* Flip the operator used in a comparison (< -> >).
* This is useful when flipping a comparison due to
* type precedence.
*
* @param operator The operator to flip.
*
* @return The flipped operator.
*/
protected static int flip(int operator)
{
switch (operator)
{
case Orderable.ORDER_OP_LESSTHAN:
// < -> >
return Orderable.ORDER_OP_GREATERTHAN;
case Orderable.ORDER_OP_LESSOREQUALS:
// <= -> >=
return Orderable.ORDER_OP_GREATEROREQUALS;
case Orderable.ORDER_OP_EQUALS:
// = -> =
return Orderable.ORDER_OP_EQUALS;
default:
// These operators only appear due to flipping.
// They should never be flipped themselves.
if (SanityManager.DEBUG)
{
SanityManager.THROWASSERT(
"Attempting to flip an operator that is not " +
"expected to be flipped.");
}
return operator;
}
}
/*
* DataValueDescriptor interface
*/
/**
* @see DataValueDescriptor#coalesce
* @exception StandardException Thrown on error
*/
public DataValueDescriptor coalesce(DataValueDescriptor[] argumentsList, DataValueDescriptor returnValue)
throws StandardException
{
// arguments list should have at least 2 arguments
if (SanityManager.DEBUG)
{
SanityManager.ASSERT(argumentsList != null,
"argumentsList expected to be non-null");
SanityManager.ASSERT(argumentsList.length > 1,
"argumentsList.length expected to be > 1");
}
/* Walk the arguments list until we find a non-null value. Otherwise we will return null
*/
int index;
for (index = 0; index < argumentsList.length; index++)
{
if (!(argumentsList[index].isNull()))
{
returnValue.setValue(argumentsList[index]);
return returnValue;
}
}
returnValue.setToNull();
return returnValue;
}
/**
* @see DataValueDescriptor#in
* @exception StandardException Thrown on error
*/
public BooleanDataValue in(DataValueDescriptor left,
DataValueDescriptor[] inList,
boolean orderedList)
throws StandardException
{
BooleanDataValue retval = null;
// in list should be non-empty
if (SanityManager.DEBUG)
{
SanityManager.ASSERT(inList != null,
"inList expected to be non-null");
SanityManager.ASSERT(inList.length > 0,
"inList.length expected to be > 0");
}
// if left is null then just return false
if (left.isNull())
{
return SQLBoolean.truthValue(left,
inList[0],
false);
}
int start = 0;
int finish = inList.length;
/* Do a binary search if the list is ordered until the
* range of values to search is 3 or less.
*
* NOTE: We may have sorted the IN-lst values at compile time using
* a specific (dominant) type, but we did *not* actually cast the
* values to that type. So it's possible that different IN-list
* values have different precedences (verses each other and also
* verses the type of the left operand) when we get here. Thus
* when we do any comparisons here we have to make sure we always
* compare using the dominant type of the two values being compared.
* Otherwise we can end up with wrong results when doing the binary
* search (ex. as caused by incorrect truncation). DERBY-2256.
*/
int leftPrecedence = left.typePrecedence();
DataValueDescriptor comparator = null;
if (orderedList)
{
while (finish - start > 2)
{
int mid = ((finish - start) / 2) + start;
comparator =
(leftPrecedence < inList[mid].typePrecedence())
? inList[mid]
: left;
// Search left
retval = comparator.equals(left, inList[mid]);
if (retval.equals(true))
{
return retval;
}
BooleanDataValue goLeft =
comparator.greaterThan(inList[mid], left);
if (goLeft.equals(true))
{
// search left
finish = mid;
}
else
{
// search right
start = mid;
}
}
}
/* Walk the in list comparing the values. Return as soon as we
* find a match. If the list is ordered, return as soon as the left
* value is greater than an element in the in list.
*
* Note: for the same reasons outlined above we must be sure to always
* do the comparisons using the dominant type of the two values being
* compared.
*/
for (int index = start; index < finish; index++)
{
comparator =
(leftPrecedence < inList[index].typePrecedence())
? inList[index]
: left;
retval = comparator.equals(left, inList[index]);
if (retval.equals(true))
{
break;
}
// Can we stop searching?
if (orderedList)
{
BooleanDataValue stop =
comparator.greaterThan(inList[index], left);
if (stop.equals(true))
{
break;
}
}
}
return retval;
}
/*
* equals
*/
public boolean equals(Object other)
{
if (! (other instanceof DataValueDescriptor))
{
return false;
}
try
{
return compare(ORDER_OP_EQUALS, (DataValueDescriptor) other, true, false);
}
catch (StandardException se)
{
return false;
}
}
public void setValue(InputStream theStream, int valueLength) throws StandardException
{
throwLangSetMismatch("java.io.InputStream");
}
/**
Check the value to seem if it conforms to the restrictions
imposed by DB2/JCC on host variables for this type.
@exception StandardException Variable is too big.
*/
public void checkHostVariable(int declaredLength) throws StandardException
{
}
/**
Return an conversion exception from this type to another.
*/
protected final StandardException dataTypeConversion(String targetType) {
return StandardException.newException(SQLState.LANG_DATA_TYPE_GET_MISMATCH,
targetType, this.getTypeName());
}
/**
Return an out of range exception for this type.
*/
protected final StandardException outOfRange()
{
return StandardException.newException(
SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, getTypeName());
}
/**
Return an out of range exception for this type.
*/
protected final StandardException invalidFormat()
{
return StandardException.newException(
SQLState.LANG_FORMAT_EXCEPTION, getTypeName());
}
}
The table below shows all metrics for DataType.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 97.00 | Number of blocks | |
| BLOCK_COMMENT | 68.00 | Number of block comment lines | |
| COMMENTS | 577.00 | Comment lines | |
| COMMENT_DENSITY | 1.67 | Comment density | |
| COMPARISONS | 44.00 | Number of comparison operators | |
| CYCLOMATIC | 121.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 66.00 | Comments in declarations | |
| DOC_COMMENT | 493.00 | Number of javadoc comment lines | |
| ELOC | 346.00 | Effective lines of code | |
| EXEC_COMMENTS | 21.00 | Comments in executable code | |
| EXITS | 48.00 | Procedure exits | |
| FUNCTIONS | 68.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 94.57 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 214.00 | 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 | 1.00 | 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 | 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 | 7.00 | 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 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 1.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | 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 | 0.00 | 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 | 5.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 3.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 8.00 | 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 | 12.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 1.00 | 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 | 1.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 1.00 | 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 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 2007.00 | 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 | 3.00 | 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 | 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 | 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 | 1230.00 | Number of lines in the source file | |
| LINE_COMMENT | 16.00 | Number of line comments | |
| LOC | 531.00 | Lines of code | |
| LOGICAL_LINES | 156.00 | Number of statements | |
| LOOPS | 3.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 848.00 | Number of operands | |
| OPERATORS | 1627.00 | Number of operators | |
| PARAMS | 74.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 2475.00 | Halstead program length | |
| PROGRAM_VOCAB | 329.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 140.00 | Number of return points from functions | |
| SIZE | 34458.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 269.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 60.00 | Number of unique operators | |
| WHITESPACE | 122.00 | Number of whitespace lines | |