com.espertech.esper.common.internal.util.apachecommonstext

Class LookupTranslator

java.lang.Object

com.espertech.esper.common.internal.util.apachecommonstext.CharSequenceTranslator

com.espertech.esper.common.internal.util.apachecommonstext.LookupTranslator

public class LookupTranslator
extends CharSequenceTranslator

Translates a value using a lookup table.

Since:

1.0

Constructor Summary

Constructors

Constructor and Description
LookupTranslator(Map<CharSequence,CharSequence> lookupMap) Define the lookup table to be used in translation

Method Summary

Modifier and Type	Method and Description
int	translate(CharSequence input, int index, Writer out) Translate a set of codepoints, represented by an int index into a CharSequence, into another set of codepoints.

Methods inherited from class com.espertech.esper.common.internal.util.apachecommonstext.CharSequenceTranslator

hex, translate, translate, with

Methods inherited from class java.lang.Object

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

Constructor Detail

LookupTranslator

public LookupTranslator(Map<CharSequence,CharSequence> lookupMap)

Define the lookup table to be used in translation

Note that, as of Lang 3.1 (the origin of this code), the key to the lookup table is converted to a java.lang.String. This is because we need the key to support hashCode and equals(Object), allowing it to be the key for a HashMap. See LANG-882.

Parameters:

lookupMap - Map<CharSequence, CharSequence> table of translator mappings

Method Detail

translate

public int translate(CharSequence input,
                     int index,
                     Writer out)
              throws IOException

Translate a set of codepoints, represented by an int index into a CharSequence, into another set of codepoints. The number of codepoints consumed must be returned, and the only IOExceptions thrown must be from interacting with the Writer so that the top level API may reliably ignore StringWriter IOExceptions.

Specified by:

translate in class CharSequenceTranslator

Parameters:

input - CharSequence that is being translated

index - int representing the current point of translation

out - Writer to translate the text to

Returns:

int count of codepoints consumed

Throws:

IOException - if and only if the Writer produces an IOException