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LUCENE-1826: NumericTokenStream is not a Tokenizer subclass but source of tokens 

and should therefore also have AttributeSource/AttributeFactory ctors.

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@807849 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Uwe Schindler 2009-08-25 23:12:22 +00:00
parent a1bd9277ca
commit 4a9ef8447d
1 changed files with 32 additions and 6 deletions
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38
src/java/org/apache/lucene/analysis/NumericTokenStream.java
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@ -17,6 +17,7 @@ package org.apache.lucene.analysis;
* limitations under the License.
*/
import org.apache.lucene.util.AttributeSource;
import org.apache.lucene.util.NumericUtils;
import org.apache.lucene.document.NumericField; // for javadocs
import org.apache.lucene.search.NumericRangeQuery; // for javadocs
@ -110,12 +111,37 @@ public final class NumericTokenStream extends TokenStream {
* before using set a value using the various set<em>???</em>Value() methods.
*/
public NumericTokenStream(final int precisionStep) {
super();
this.precisionStep = precisionStep;
if (precisionStep < 1)
throw new IllegalArgumentException("precisionStep must be >=1");
}
/**
* Expert: Creates a token stream for numeric values with the specified
* <code>precisionStep</code> using the given {@link AttributeSource}.
* The stream is not yet initialized,
* before using set a value using the various set<em>???</em>Value() methods.
*/
public NumericTokenStream(AttributeSource source, final int precisionStep) {
super(source);
this.precisionStep = precisionStep;
if (precisionStep < 1)
throw new IllegalArgumentException("precisionStep must be >=1");
}
/**
* Expert: Creates a token stream for numeric values with the specified
* <code>precisionStep</code> using the given
* {@link org.apache.lucene.util.AttributeSource.AttributeFactory}.
* The stream is not yet initialized,
* before using set a value using the various set<em>???</em>Value() methods.
*/
public NumericTokenStream(AttributeFactory factory, final int precisionStep) {
super(factory);
this.precisionStep = precisionStep;
if (precisionStep < 1)
throw new IllegalArgumentException("precisionStep must be >=1");
termAtt = (TermAttribute) addAttribute(TermAttribute.class);
typeAtt = (TypeAttribute) addAttribute(TypeAttribute.class);
posIncrAtt = (PositionIncrementAttribute) addAttribute(PositionIncrementAttribute.class);
}
/**
@ -216,9 +242,9 @@ public final class NumericTokenStream extends TokenStream {
}
// members
private final TermAttribute termAtt;
private final TypeAttribute typeAtt;
private final PositionIncrementAttribute posIncrAtt;
private final TermAttribute termAtt = (TermAttribute) addAttribute(TermAttribute.class);
private final TypeAttribute typeAtt = (TypeAttribute) addAttribute(TypeAttribute.class);
private final PositionIncrementAttribute posIncrAtt = (PositionIncrementAttribute) addAttribute(PositionIncrementAttribute.class);
private int shift = 0, valSize = 0; // valSize==0 means not initialized
private final int precisionStep;