CastNode.java
| Index Score | ||
|---|---|---|
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org.apache.derby.impl.sql.compile |
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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 | |
|---|---|---|
| RETURNS | Number of return points from functions |  |
| EXEC_COMMENTS | Comments in executable code | |
| COMMENTS | Comment lines | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| SIZE | Size of the file in bytes | |
| EXITS | Procedure exits | |
| LINES | Number of lines in the source file | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| CYCLOMATIC | Cyclomatic complexity | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| DOC_COMMENT | Number of javadoc comment lines | |
| LOC | Lines of code | |
| ELOC | Effective lines of code | |
| JAVA0031 | JAVA0031 Case statement not properly closed | |
| BLOCK_COMMENT | Number of block comment lines | |
| OPERANDS | Number of operands | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERATORS | Number of operators | |
| JAVA0032 | JAVA0032 Switch statement missing default | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| LINE_COMMENT | Number of line comments | |
| DECL_COMMENTS | Comments in declarations | |
| LOGICAL_LINES | Number of statements | |
| COMPARISONS | Number of comparison operators | |
| JAVA0075 | JAVA0075 Method parameter hides field | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| UNIQUE_OPERATORS | Number of unique operators | |
| WHITESPACE | Number of whitespace lines | |
| BLOCKS | Number of blocks | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0106 | JAVA0106 Unnecessary import from current package | |
| JAVA0288 | JAVA0288 Inconsistent null check | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| PARAMS | Number of formal parameter declarations | |
| LOOPS | Number of loops | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
/*
Derby - Class org.apache.derby.impl.sql.compile.CastNode
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.compile;
import org.apache.derby.iapi.services.compiler.MethodBuilder;
import org.apache.derby.iapi.services.compiler.LocalField;
import org.apache.derby.iapi.services.sanity.SanityManager;
import org.apache.derby.iapi.error.StandardException;
import org.apache.derby.iapi.sql.compile.C_NodeTypes;
import org.apache.derby.iapi.types.DataTypeUtilities;
import org.apache.derby.iapi.types.StringDataValue;
import org.apache.derby.iapi.types.TypeId;
import org.apache.derby.iapi.reference.Limits;
import org.apache.derby.iapi.reference.SQLState;
import org.apache.derby.iapi.types.DataTypeDescriptor;
import org.apache.derby.iapi.types.DataValueDescriptor;
import org.apache.derby.iapi.sql.compile.TypeCompiler;
import org.apache.derby.iapi.util.StringUtil;
import org.apache.derby.iapi.reference.ClassName;
import org.apache.derby.iapi.services.classfile.VMOpcode;
import org.apache.derby.iapi.sql.compile.Visitable;
import org.apache.derby.iapi.sql.compile.Visitor;
import java.lang.reflect.Modifier;
import org.apache.derby.impl.sql.compile.ExpressionClassBuilder;
import org.apache.derby.iapi.types.NumberDataType;
import org.apache.derby.iapi.util.JBitSet;
import org.apache.derby.iapi.util.ReuseFactory;
import java.sql.Types;
import java.util.Vector;
/**
* An CastNode represents a cast expressionr.
*
*/
public class CastNode extends ValueNode
{
ValueNode castOperand;
private int targetCharType;
TypeId sourceCTI = null;
private boolean forDataTypeFunction = false;
/** This variable gets set by the parser to indiciate that this CAST node
* has been generated by the parser. This means that we should use the
* collation info of the current compilation schmea for this node's
* collation setting. If this variable does not get set to true, then it
* means that this CAST node has been an internally generated node and we
* should not touch the collation info set for this CAST node because it
* has been already set correctly by the class that generated this CAST
* node. Collation info is part of the DataTypeDescriptor that's defined
* on the ValueNode (the super class of this CastNode class)
*/
private boolean externallyGeneratedCastNode = false;
/*
** Static array of valid casts. Dimentions
** produce a single boolean which indicates
** whether the case is possible or not.
*/
/**
* Initializer for a CastNode
*
* @param castOperand The operand of the node
* @param castTarget DataTypeServices (target type of cast)
*
* @exception StandardException Thrown on error
*/
public void init(Object castOperand, Object castTarget)
throws StandardException
{
this.castOperand = (ValueNode) castOperand;
setType((DataTypeDescriptor) castTarget);
}
/**
* Initializer for a CastNode
*
* @param castOperand The operand of the node
* @param charType CHAR or VARCHAR JDBC type as target
* @param charLength target type length
*
* @exception StandardException Thrown on error
*/
public void init(Object castOperand, Object charType, Object charLength)
throws StandardException
{
this.castOperand = (ValueNode) castOperand;
int charLen = ((Integer) charLength).intValue();
targetCharType = ((Integer) charType).intValue();
if (charLen < 0) // unknown, figure out later
return;
setType(DataTypeDescriptor.getBuiltInDataTypeDescriptor(targetCharType, charLen));
}
/**
* Convert this object to a String. See comments in QueryTreeNode.java
* for how this should be done for tree printing.
*
* @return This object as a String
*/
public String toString()
{
if (SanityManager.DEBUG)
{
return "castTarget: " + getTypeServices() + "\n" +
super.toString();
}
else
{
return "";
}
}
/**
* Prints the sub-nodes of this object. See QueryTreeNode.java for
* how tree printing is supposed to work.
*
* @param depth The depth of this node in the tree
*/
public void printSubNodes(int depth)
{
if (SanityManager.DEBUG)
{
super.printSubNodes(depth);
if (castOperand != null)
{
printLabel(depth, "castOperand: ");
castOperand.treePrint(depth + 1);
}
}
}
protected int getOrderableVariantType() throws StandardException
{
return castOperand.getOrderableVariantType();
}
/**
* Bind this expression. This means binding the sub-expressions,
* as well as figuring out what the return type is for this expression.
*
* @param fromList The FROM list for the query this
* expression is in, for binding columns.
* @param subqueryList The subquery list being built as we find SubqueryNodes
* @param aggregateVector The aggregate vector being built as we find AggregateNodes
*
* @return The new top of the expression tree.
*
* @exception StandardException Thrown on error
*/
public ValueNode bindExpression(FromList fromList, SubqueryList subqueryList,
Vector aggregateVector)
throws StandardException
{
castOperand = castOperand.bindExpression(
fromList, subqueryList,
aggregateVector);
if (getTypeServices() == null) //CHAR or VARCHAR function without specifying target length
{
DataTypeDescriptor opndType = castOperand.getTypeServices();
int length = -1;
TypeId srcTypeId = opndType.getTypeId();
if (opndType != null)
{
if (srcTypeId.isNumericTypeId())
{
length = opndType.getPrecision() + 1; // 1 for the sign
if (opndType.getScale() > 0)
length += 1; // 1 for the decimal .
}
/*
* Derby-1132 : The length for the target type was calculated
* incorrectly while Char & Varchar functions were used. Thus
* adding the check for Char & Varchar and calculating the
* length based on the operand type.
*/
else if(srcTypeId.isStringTypeId())
{
length = opndType.getMaximumWidth();
// Truncate the target type width to the max width of the
// data type
if (this.targetCharType == Types.CHAR)
length = Math.min(length, Limits.DB2_CHAR_MAXWIDTH);
else if (this.targetCharType == Types.VARCHAR)
length = Math.min(length, Limits.DB2_VARCHAR_MAXWIDTH);
}
else
{
TypeId typeid = opndType.getTypeId();
if (length < 0)
length = DataTypeUtilities.getColumnDisplaySize(typeid.getJDBCTypeId(),-1);
}
}
if (length < 0)
length = 1; // same default as in parser
setType(DataTypeDescriptor.getBuiltInDataTypeDescriptor(targetCharType, length));
}
/*
** If castOperand is an untyped null,
** then we must set the type.
*/
if (castOperand instanceof UntypedNullConstantNode)
{
castOperand.setType(getTypeServices());
}
bindCastNodeOnly();
/* We can't chop out cast above an untyped null because
* the store can't handle it.
*/
if ((castOperand instanceof ConstantNode) &&
!(castOperand instanceof UntypedNullConstantNode))
{
/* If the castOperand is a typed constant then we do the cast at
* bind time and return a constant of the correct type.
* NOTE: This could return an exception, but we're prepared to
* deal with that. (NumberFormatException, etc.)
* We only worry about the easy (and useful)
* converions at bind time.
* Here's what we support:
* source destination
* ------ -----------
* boolean boolean
* boolean char
* char boolean
* char date/time/ts
* char non-decimal numeric
* date/time/ts char
* numeric char
* numeric non-decimal numeric
*/
/* RESOLVE - to be filled in. */
ValueNode retNode = this;
int sourceJDBCTypeId = sourceCTI.getJDBCTypeId();
int destJDBCTypeId = getTypeId().getJDBCTypeId();
switch (sourceJDBCTypeId)
{
case Types.BIT:
case Types.BOOLEAN:
// (BIT is boolean)
if (destJDBCTypeId == Types.BIT || destJDBCTypeId == Types.BOOLEAN)
{
retNode = castOperand;
}
else if (destJDBCTypeId == Types.CHAR)
{
BooleanConstantNode bcn = (BooleanConstantNode) castOperand;
String booleanString = bcn.getValueAsString();
retNode = (ValueNode) getNodeFactory().getNode(
C_NodeTypes.CHAR_CONSTANT_NODE,
booleanString,
ReuseFactory.getInteger(
getTypeServices().getMaximumWidth()),
getContextManager());
}
break;
case Types.CHAR:
retNode = getCastFromCharConstant(destJDBCTypeId);
break;
case Types.DATE:
case Types.TIME:
case Types.TIMESTAMP:
if (destJDBCTypeId == Types.CHAR)
{
String castValue =
((UserTypeConstantNode) castOperand).
getObjectValue().
toString();
retNode = (ValueNode) getNodeFactory().getNode(
C_NodeTypes.CHAR_CONSTANT_NODE,
castValue,
ReuseFactory.getInteger(
getTypeServices().getMaximumWidth()),
getContextManager());
}
break;
case Types.DECIMAL:
// ignore decimal -> decimal casts for now
if (destJDBCTypeId == Types.DECIMAL ||
destJDBCTypeId == Types.NUMERIC)
break;
// fall through
case Types.TINYINT:
case Types.SMALLINT:
case Types.INTEGER:
case Types.BIGINT:
case Types.DOUBLE:
case Types.REAL:
retNode = getCastFromNumericType(
((ConstantNode) castOperand).getValue(),
destJDBCTypeId);
break;
}
// Return the new constant if the cast was performed
return retNode;
}
return this;
}
/**
* Bind this node but not its child. Caller has already bound
* the child.
* This is useful for when we generate a CastNode during binding
* after having already bound the child.
*
* @exception StandardException Thrown on error
*/
public void bindCastNodeOnly()
throws StandardException
{
/*
** The result type is always castTarget.
*/
sourceCTI = castOperand.getTypeId();
//If the result type of cast is string data type, then that data type
//should get it's collation type from the current schema.
if (externallyGeneratedCastNode && getTypeId().isStringTypeId()) {
//set the collation type to be same as the compilation schema's
//collation type. Collation derivation will be set to "IMPLICIT".
setCollationUsingCompilationSchema();
}
/*
** If it is a java cast, do some work to make sure
** the classes are ok and that they are compatible
*/
if (getTypeId().userType())
{
String className = getTypeId().getCorrespondingJavaTypeName();
verifyClassExist(className);
setType(new DataTypeDescriptor(TypeId.getUserDefinedTypeId(className, false),
true /* assume nullable for now, change it if not nullable */
));
}
// Obviously the type of a parameter that
// requires its type from context (a parameter)
// gets its type from the type of the CAST.
if (castOperand.requiresTypeFromContext())
{
castOperand.setType(getTypeServices());
}
/*
** If it isn't null, then we have
** a cast from one JBMS type to another. So we
** have to figure out if it is legit.
*/
else if (!(castOperand instanceof UntypedNullConstantNode))
{
/*
** Make sure we can assign the two classes
*/
TypeCompiler tc = castOperand.getTypeCompiler();
if (! tc.convertible(getTypeId(), forDataTypeFunction))
{
throw StandardException.newException(SQLState.LANG_INVALID_CAST,
sourceCTI.getSQLTypeName(),
getTypeId().getSQLTypeName());
}
}
// Preserve the nullability of the operand since a CAST
// of a non-NULL value is also non-NULL.
setNullability(castOperand.getTypeServices().isNullable());
}
/**
* Get a constant representing the cast from a CHAR to another
* type. If this is not an "easy" cast to perform, then just
* return this cast node.
* Here's what we think is "easy":
* source destination
* ------ -----------
* char boolean
* char date/time/ts
* char non-decimal numeric
*
* @param destJDBCTypeId The destination JDBC TypeId
*
* @return The new top of the tree (this CastNode or a new Constant)
*
* @exception StandardException Thrown on error
*/
private ValueNode getCastFromCharConstant(int destJDBCTypeId)
throws StandardException
{
String charValue = ((CharConstantNode) castOperand).getString();
String cleanCharValue = StringUtil.SQLToUpperCase(charValue.trim());
ValueNode retNode = this;
switch (destJDBCTypeId)
{
case Types.BIT:
case Types.BOOLEAN:
if (cleanCharValue.equals("TRUE"))
{
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.BOOLEAN_CONSTANT_NODE,
Boolean.TRUE,
getContextManager());
}
else if (cleanCharValue.equals("FALSE"))
{
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.BOOLEAN_CONSTANT_NODE,
Boolean.FALSE,
getContextManager());
}
else
{
throw StandardException.newException(SQLState.LANG_FORMAT_EXCEPTION, "boolean");
}
case Types.DATE:
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.USERTYPE_CONSTANT_NODE,
getDataValueFactory().getDateValue(cleanCharValue, false),
getContextManager());
case Types.TIMESTAMP:
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.USERTYPE_CONSTANT_NODE,
getDataValueFactory().getTimestampValue(cleanCharValue, false),
getContextManager());
case Types.TIME:
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.USERTYPE_CONSTANT_NODE,
getDataValueFactory().getTimeValue(cleanCharValue, false),
getContextManager());
case Types.TINYINT:
case Types.SMALLINT:
case Types.INTEGER:
case Types.BIGINT:
try
{
// #3756 - Truncate decimal portion for casts to integer
return getCastFromIntegralType((new Double(cleanCharValue)).longValue(),
destJDBCTypeId);
}
catch (NumberFormatException nfe)
{
String sqlName = TypeId.getBuiltInTypeId(destJDBCTypeId).getSQLTypeName();
throw StandardException.newException(SQLState.LANG_FORMAT_EXCEPTION, sqlName);
}
case Types.REAL:
Float floatValue;
try
{
floatValue = Float.valueOf(cleanCharValue);
}
catch (NumberFormatException nfe)
{
throw StandardException.newException(SQLState.LANG_FORMAT_EXCEPTION, "float");
}
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.FLOAT_CONSTANT_NODE,
floatValue,
getContextManager());
case Types.DOUBLE:
Double doubleValue;
try
{
doubleValue = new Double(cleanCharValue);
}
catch (NumberFormatException nfe)
{
throw StandardException.newException(SQLState.LANG_FORMAT_EXCEPTION, "double");
}
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.DOUBLE_CONSTANT_NODE,
doubleValue,
getContextManager());
}
return retNode;
}
/**
* Get a constant representing the cast from an integral type to another
* type. If this is not an "easy" cast to perform, then just
* return this cast node.
* Here's what we think is "easy":
* source destination
* ------ -----------
* integral type non-decimal numeric
* integral type char
*
* @param longValue integral type as a long to cast from
* @param destJDBCTypeId The destination JDBC TypeId
*
* @return The new top of the tree (this CastNode or a new Constant)
*
* @exception StandardException Thrown on error
*/
private ValueNode getCastFromIntegralType(
long longValue,
int destJDBCTypeId)
throws StandardException
{
ValueNode retNode = this;
switch (destJDBCTypeId)
{
case Types.CHAR:
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.CHAR_CONSTANT_NODE,
Long.toString(longValue),
ReuseFactory.getInteger(
getTypeServices().getMaximumWidth()),
getContextManager());
case Types.TINYINT:
if (longValue < Byte.MIN_VALUE ||
longValue > Byte.MAX_VALUE)
{
throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, "TINYINT");
}
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.TINYINT_CONSTANT_NODE,
ReuseFactory.getByte((byte) longValue),
getContextManager());
case Types.SMALLINT:
if (longValue < Short.MIN_VALUE ||
longValue > Short.MAX_VALUE)
{
throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, "SHORT");
}
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.SMALLINT_CONSTANT_NODE,
ReuseFactory.getShort(
(short) longValue),
getContextManager());
case Types.INTEGER:
if (longValue < Integer.MIN_VALUE ||
longValue > Integer.MAX_VALUE)
{
throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, "INTEGER");
}
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.INT_CONSTANT_NODE,
ReuseFactory.getInteger(
(int) longValue),
getContextManager());
case Types.BIGINT:
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.LONGINT_CONSTANT_NODE,
ReuseFactory.getLong(longValue),
getContextManager());
case Types.REAL:
if (Math.abs(longValue) > Float.MAX_VALUE)
{
throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, "REAL");
}
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.FLOAT_CONSTANT_NODE,
new Float((float) longValue),
getContextManager());
case Types.DOUBLE:
return (ValueNode) getNodeFactory().getNode(
C_NodeTypes.DOUBLE_CONSTANT_NODE,
new Double((double) longValue),
getContextManager());
}
return retNode;
}
/**
* Get a constant representing the cast from a non-integral type to another
* type. If this is not an "easy" cast to perform, then just
* return this cast node.
* Here's what we think is "easy":
* source destination
* ------ -----------
* non-integral type non-decimal numeric
* non-integral type char
*
* @param constantValue non-integral type a a double to cast from
* @param destJDBCTypeId The destination JDBC TypeId
*
* @return The new top of the tree (this CastNode or a new Constant)
*
* @exception StandardException Thrown on error
*/
private ValueNode getCastFromNumericType(
DataValueDescriptor constantValue,
int destJDBCTypeId)
throws StandardException
{
int nodeType = -1;
Object constantObject = null;
switch (destJDBCTypeId)
{
case Types.CHAR:
nodeType = C_NodeTypes.CHAR_CONSTANT_NODE;
constantObject = constantValue.getString();
return (ValueNode) getNodeFactory().getNode(
nodeType,
constantObject,
ReuseFactory.getInteger(
getTypeServices().getMaximumWidth()),
getContextManager());
case Types.TINYINT:
nodeType = C_NodeTypes.TINYINT_CONSTANT_NODE;
constantObject = new Byte(constantValue.getByte());
break;
case Types.SMALLINT:
nodeType = C_NodeTypes.SMALLINT_CONSTANT_NODE;
constantObject = ReuseFactory.getShort(constantValue.getShort());
break;
case Types.INTEGER:
nodeType = C_NodeTypes.INT_CONSTANT_NODE;
constantObject = ReuseFactory.getInteger(constantValue.getInt());
break;
case Types.BIGINT:
nodeType = C_NodeTypes.LONGINT_CONSTANT_NODE;
constantObject = ReuseFactory.getLong(constantValue.getLong());
break;
case Types.REAL:
nodeType = C_NodeTypes.FLOAT_CONSTANT_NODE;
constantObject = new Float(NumberDataType.normalizeREAL(constantValue.getDouble()));
break;
case Types.DOUBLE:
// no need to normalize here because no constant could be out of range for a double
nodeType = C_NodeTypes.DOUBLE_CONSTANT_NODE;
constantObject = new Double(constantValue.getDouble());
break;
}
if (nodeType == -1)
return this;
return (ValueNode) getNodeFactory().getNode(
nodeType,
constantObject,
getContextManager());
}
/**
* Preprocess an expression tree. We do a number of transformations
* here (including subqueries, IN lists, LIKE and BETWEEN) plus
* subquery flattening.
* NOTE: This is done before the outer ResultSetNode is preprocessed.
*
* @param numTables Number of tables in the DML Statement
* @param outerFromList FromList from outer query block
* @param outerSubqueryList SubqueryList from outer query block
* @param outerPredicateList PredicateList from outer query block
*
* @return The modified expression
*
* @exception StandardException Thrown on error
*/
public ValueNode preprocess(int numTables,
FromList outerFromList,
SubqueryList outerSubqueryList,
PredicateList outerPredicateList)
throws StandardException
{
castOperand = castOperand.preprocess(numTables,
outerFromList, outerSubqueryList,
outerPredicateList);
return this;
}
/**
* Categorize this predicate. Initially, this means
* building a bit map of the referenced tables for each predicate.
* If the source of this ColumnReference (at the next underlying level)
* is not a ColumnReference or a VirtualColumnNode then this predicate
* will not be pushed down.
*
* For example, in:
* select * from (select 1 from s) a (x) where x = 1
* we will not push down x = 1.
* NOTE: It would be easy to handle the case of a constant, but if the
* inner SELECT returns an arbitrary expression, then we would have to copy
* that tree into the pushed predicate, and that tree could contain
* subqueries and method calls.
* RESOLVE - revisit this issue once we have views.
*
* @param referencedTabs JBitSet with bit map of referenced FromTables
* @param simplePredsOnly Whether or not to consider method
* calls, field references and conditional nodes
* when building bit map
*
* @return boolean Whether or not source.expression is a ColumnReference
* or a VirtualColumnNode.
*
* @exception StandardException Thrown on error
*/
public boolean categorize(JBitSet referencedTabs, boolean simplePredsOnly)
throws StandardException
{
return castOperand.categorize(referencedTabs, simplePredsOnly);
}
/**
* Remap all ColumnReferences in this tree to be clones of the
* underlying expression.
*
* @return ValueNode The remapped expression tree.
*
* @exception StandardException Thrown on error
*/
public ValueNode remapColumnReferencesToExpressions()
throws StandardException
{
castOperand = castOperand.remapColumnReferencesToExpressions();
return this;
}
/**
* Return whether or not this expression tree represents a constant expression.
*
* @return Whether or not this expression tree represents a constant expression.
*/
public boolean isConstantExpression()
{
return castOperand.isConstantExpression();
}
/** @see ValueNode#constantExpression */
public boolean constantExpression(PredicateList whereClause)
{
return castOperand.constantExpression(whereClause);
}
/**
* Return an Object representing the bind time value of this
* expression tree. If the expression tree does not evaluate to
* a constant at bind time then we return null.
* This is useful for bind time resolution of VTIs.
* RESOLVE: What do we do for primitives?
*
* @return An Object representing the bind time value of this expression tree.
* (null if not a bind time constant.)
*
* @exception StandardException Thrown on error
*/
Object getConstantValueAsObject()
throws StandardException
{
Object sourceObject = castOperand.getConstantValueAsObject();
// RESOLVE - need to figure out how to handle casts
if (sourceObject == null)
{
return null;
}
// Simple if source and destination are of same type
if (sourceCTI.getCorrespondingJavaTypeName().equals(
getTypeId().getCorrespondingJavaTypeName()))
{
return sourceObject;
}
// RESOLVE - simply return null until we can figure out how to
// do the cast
return null;
}
/**
* Do code generation for this unary operator.
*
* @param acb The ExpressionClassBuilder for the class we're generating
* @param mb The method the code to place the code
*
* @exception StandardException Thrown on error
*/
public void generateExpression(ExpressionClassBuilder acb,
MethodBuilder mb)
throws StandardException
{
castOperand.generateExpression(acb, mb);
/* No need to generate code for null constants */
if (castOperand instanceof UntypedNullConstantNode)
{
return;
}
/* HACK ALERT. When casting a parameter, there
* is not sourceCTI. Code generation requires one,
* so we simply set it to be the same as the
* destCTI. The user can still pass whatever
* type they'd like in as a parameter.
* They'll get an exception, as expected, if the
* conversion cannot be performed.
*/
else if (castOperand.requiresTypeFromContext())
{
sourceCTI = getTypeId();
}
genDataValueConversion(acb, mb);
}
private void genDataValueConversion(ExpressionClassBuilder acb,
MethodBuilder mb)
throws StandardException
{
MethodBuilder acbConstructor = acb.getConstructor();
String resultTypeName = getTypeCompiler().interfaceName();
/* field = method call */
/* Allocate an object for re-use to hold the result of the operator */
LocalField field = acb.newFieldDeclaration(Modifier.PRIVATE, resultTypeName);
/*
** Store the result of the method call in the field, so we can re-use
** the object.
*/
acb.generateNull(acbConstructor, getTypeCompiler(getTypeId()),
getTypeServices().getCollationType());
acbConstructor.setField(field);
/*
For most types generate
targetDVD.setValue(sourceDVD);
For source or destination java types generate
Object o = sourceDVD.getObject();
targetDVD.setObjectForCast(o, o instanceof dest java type, dest java type);
// optional for variable length types
targetDVD.setWidth();
*/
if (!sourceCTI.userType() && !getTypeId().userType()) {
mb.getField(field); // targetDVD reference for the setValue method call
mb.swap();
mb.upCast(ClassName.DataValueDescriptor);
mb.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.DataValueDescriptor,
"setValue", "void", 1);
}
else
{
/*
** generate: expr.getObject()
*/
mb.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.DataValueDescriptor,
"getObject", "java.lang.Object", 0);
//castExpr
mb.getField(field); // instance for the setValue/setObjectForCast method call
mb.swap(); // push it before the value
/*
** We are casting a java type, generate:
**
** DataValueDescriptor.setObjectForCast(java.lang.Object castExpr, boolean instanceOfExpr, destinationClassName)
** where instanceOfExpr is "source instanceof destinationClass".
**
*/
String destinationType = getTypeId().getCorrespondingJavaTypeName();
// at this point method instance and cast result are on the stack
// we duplicate the cast value in order to perform the instanceof check
mb.dup();
mb.isInstanceOf(destinationType);
mb.push(destinationType);
mb.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.DataValueDescriptor,
"setObjectForCast", "void", 3);
}
mb.getField(field);
/*
** If we are casting to a variable length datatype, we
** have to make sure we have set it to the correct
** length.
*/
if (getTypeId().variableLength())
{
boolean isNumber = getTypeId().isNumericTypeId();
// to leave the DataValueDescriptor value on the stack, since setWidth is void
mb.dup();
/* setWidth() is on VSDV - upcast since
* decimal implements subinterface
* of VSDV.
*/
mb.push(isNumber ? getTypeServices().getPrecision() : getTypeServices().getMaximumWidth());
mb.push(getTypeServices().getScale());
mb.push(!sourceCTI.variableLength() || isNumber);
mb.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.VariableSizeDataValue,
"setWidth", "void", 3);
}
}
/**
* Accept a visitor, and call v.visit()
* on child nodes as necessary.
*
* @param v the visitor
*
* @exception StandardException on error
*/
public Visitable accept(Visitor v)
throws StandardException
{
Visitable returnNode = v.visit(this);
if (v.skipChildren(this))
{
return returnNode;
}
if (castOperand != null && !v.stopTraversal())
{
castOperand = (ValueNode)castOperand.accept(v);
}
return returnNode;
}
/** This method gets called by the parser to indiciate that this CAST node
* has been generated by the parser. This means that we should use the
* collation info of the current compilation schmea for this node's
* collation setting. If this method does not get called, then it means
* that this CAST node has been an internally generated node and we should
* not touch the collation of this CAST node because it has been already
* set correctly by the class that generated this CAST node.
*/
void setForExternallyGeneratedCASTnode()
{
externallyGeneratedCastNode = true;
}
/** set this to be a dataTypeScalarFunction
*
* @param b true to use function conversion rules
*/
void setForDataTypeFunction(boolean b)
{
forDataTypeFunction = b;
}
/**
* {@inheritDoc}
* @throws StandardException
*/
protected boolean isEquivalent(ValueNode o) throws StandardException
{
if (isSameNodeType(o))
{
CastNode other = (CastNode)o;
return getTypeServices().equals(other.getTypeServices())
&& castOperand.isEquivalent(other.castOperand);
}
return false;
}
}
The table below shows all metrics for CastNode.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 64.00 | Number of blocks | |
| BLOCK_COMMENT | 119.00 | Number of block comment lines | |
| COMMENTS | 358.00 | Comment lines | |
| COMMENT_DENSITY | 0.85 | Comment density | |
| COMPARISONS | 48.00 | Number of comparison operators | |
| CYCLOMATIC | 115.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 24.00 | Comments in declarations | |
| DOC_COMMENT | 214.00 | Number of javadoc comment lines | |
| ELOC | 423.00 | Effective lines of code | |
| EXEC_COMMENTS | 36.00 | Comments in executable code | |
| EXITS | 99.00 | Procedure exits | |
| FUNCTIONS | 22.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 89.61 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 155.00 | 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 | 0.00 | 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 | 3.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 4.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 8.00 | 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 | 2.00 | 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 | 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 | 1.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 0.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 3.00 | 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 | 0.00 | 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 | 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 | 1.00 | 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 | 2993.00 | 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 | 2.00 | 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 | 1.00 | JAVA0288 Inconsistent null check | |
| LINES | 1041.00 | Number of lines in the source file | |
| LINE_COMMENT | 25.00 | Number of line comments | |
| LOC | 559.00 | Lines of code | |
| LOGICAL_LINES | 193.00 | Number of statements | |
| LOOPS | 0.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 1096.00 | Number of operands | |
| OPERATORS | 2006.00 | Number of operators | |
| PARAMS | 28.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3102.00 | Halstead program length | |
| PROGRAM_VOCAB | 370.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 127.00 | Number of return points from functions | |
| SIZE | 31195.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 318.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 52.00 | Number of unique operators | |
| WHITESPACE | 124.00 | Number of whitespace lines | |