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removeField and removeFields added to Document 

enhancement was proposed in bug 28462


git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@150298 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Christoph Goller 2004-04-20 17:26:16 +00:00
parent 420d1d7c07
commit 6a9665f792
2 changed files with 63 additions and 0 deletions
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31
src/java/org/apache/lucene/document/Document.java
View File

@ -17,6 +17,7 @@ package org.apache.lucene.document;
*/
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import java.util.ArrayList;
import java.util.Vector;
@ -80,6 +81,36 @@ public final class Document implements java.io.Serializable {
public final void add(Field field) {
fields.add(field);
}
/**
* Removes field with the given name from the document.
* If multiple fields exist with this name, this method returns the first value added.
* If there is no field with the specified name, the document remains unchanged.
*/
public final void removeField(String name) {
Iterator it = fields.iterator();
while (it.hasNext()) {
Field field = (Field)it.next();
if (field.name().equals(name)) {
it.remove();
return;
}
}
}
/**
* Removes all fields with the given name from the document.
* If there is no field with the specified name, the document remains unchanged.
*/
public final void removeFields(String name) {
Iterator it = fields.iterator();
while (it.hasNext()) {
Field field = (Field)it.next();
if (field.name().equals(name)) {
it.remove();
}
}
}
/** Returns a field with the given name if any exist in this document, or
* null. If multiple fields exists with this name, this method returns the

32
src/test/org/apache/lucene/document/TestDocument.java
View File

@ -40,6 +40,38 @@ import java.io.IOException;
*/
public class TestDocument extends TestCase
{
/**
* Tests {@link Document#remove()} method for a brand new Document
* that has not been indexed yet.
*
* @throws Exception on error
*/
public void testRemoveForNewDocument() throws Exception
{
Document doc = makeDocumentWithFields();
assertEquals(8, doc.fields.size());
doc.removeFields("keyword");
assertEquals(6, doc.fields.size());
doc.removeFields("doesnotexists"); // removing non-existing fields is siltenlty ignored
doc.removeFields("keyword"); // removing a field more than once
assertEquals(6, doc.fields.size());
doc.removeField("text");
assertEquals(5, doc.fields.size());
doc.removeField("text");
assertEquals(4, doc.fields.size());
doc.removeField("text");
assertEquals(4, doc.fields.size());
doc.removeField("doesnotexists"); // removing non-existing fields is siltenlty ignored
assertEquals(4, doc.fields.size());
doc.removeFields("unindexed");
assertEquals(2, doc.fields.size());
doc.removeFields("unstored");
assertEquals(0, doc.fields.size());
doc.removeFields("doesnotexists"); // removing non-existing fields is siltenlty ignored
assertEquals(0, doc.fields.size());
}
/**
* Tests {@link Document#getValues()} method for a brand new Document
* that has not been indexed yet.