org.eclipse.persistence.internal.jpa.parsing.jpql

Class CaseInsensitiveANTLRStringStream

java.lang.Object

org.antlr.runtime.ANTLRStringStream

org.eclipse.persistence.internal.jpa.parsing.jpql.CaseInsensitiveANTLRStringStream

All Implemented Interfaces:

org.antlr.runtime.CharStream, org.antlr.runtime.IntStream

public class CaseInsensitiveANTLRStringStream
extends org.antlr.runtime.ANTLRStringStream

This Stream is used when tokenizing JPQL queries It overrides the look ahead operator to return the lower case version of the string This is required because starting in ANTLR v3, case insensitivity is not provided as an option in ANTLR and JPQL requires case insensitivity

Author:

tware

Field Summary

Fields inherited from class org.antlr.runtime.ANTLRStringStream

name

Fields inherited from interface org.antlr.runtime.CharStream

EOF

Constructor Summary

Constructors

Constructor and Description
CaseInsensitiveANTLRStringStream(char[] data, int numberOfActualCharsInArray) This is the preferred constructor as no data is copied
CaseInsensitiveANTLRStringStream(String input) Copy data in string to a local char array

Method Summary

Modifier and Type	Method and Description
int	LA(int i)

Methods inherited from class org.antlr.runtime.ANTLRStringStream

consume, getCharPositionInLine, getLine, getSourceName, index, LT, mark, release, reset, rewind, rewind, seek, setCharPositionInLine, setLine, size, substring, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

CaseInsensitiveANTLRStringStream

public CaseInsensitiveANTLRStringStream(String input)

Copy data in string to a local char array

CaseInsensitiveANTLRStringStream

public CaseInsensitiveANTLRStringStream(char[] data,
                                        int numberOfActualCharsInArray)

This is the preferred constructor as no data is copied

Method Detail

LA

public int LA(int i)

Specified by:

LA in interface org.antlr.runtime.IntStream

Overrides:

LA in class org.antlr.runtime.ANTLRStringStream