org.apache.jackrabbit.core.query.lucene.fulltext
Class FastCharStream

java.lang.Object
  org.apache.jackrabbit.core.query.lucene.fulltext.FastCharStream

All Implemented Interfaces:

org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

public final class FastCharStream
extends Object
implements org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

Modified version of org.apache.lucene.queryParser.FastCharStream based on a String input.

An efficient implementation of JavaCC's CharStream interface.

Note that this does not do line-number counting, but instead keeps track of the character position of the token in the input, as required by Lucene's Token API.

Constructor Summary

FastCharStream(String input)
Constructs from a String.

Method Summary

void	backup(int amount)
char	BeginToken()
void	Done()
int	getBeginColumn()
int	getBeginLine()
int	getColumn()
int	getEndColumn()
int	getEndLine()
String	GetImage()
int	getLine()
char[]	GetSuffix(int len)
char	readChar()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FastCharStream

public FastCharStream(String input)

Constructs from a String.

Method Detail

readChar

public char readChar()
              throws IOException

Specified by:

readChar in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

Throws:

IOException

BeginToken

public char BeginToken()
                throws IOException

Specified by:

BeginToken in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

Throws:

IOException

backup

public void backup(int amount)

Specified by:

backup in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

GetImage

public String GetImage()

Specified by:

GetImage in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

GetSuffix

public char[] GetSuffix(int len)

Specified by:

GetSuffix in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

Done

public void Done()

Specified by:

Done in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

getColumn

public int getColumn()

Specified by:

getColumn in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

getLine

public int getLine()

Specified by:

getLine in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

getEndColumn

public int getEndColumn()

Specified by:

getEndColumn in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

getEndLine

public int getEndLine()

Specified by:

getEndLine in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

getBeginColumn

public int getBeginColumn()

Specified by:

getBeginColumn in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream

getBeginLine

public int getBeginLine()

Specified by:

getBeginLine in interface org.apache.jackrabbit.core.query.lucene.fulltext.CharStream