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Posted to java-commits@lucene.apache.org by mi...@apache.org on 2007/07/19 12:16:32 UTC
svn commit: r557553 - in /lucene/java/trunk: CHANGES.txt
src/java/org/apache/lucene/document/Field.java
Author: mikemccand
Date: Thu Jul 19 03:16:30 2007
New Revision: 557553
URL: http://svn.apache.org/viewvc?view=rev&rev=557553
Log:
LUCENE-963: added caveats to javadocs for new Field setValue(...) methods
Modified:
lucene/java/trunk/CHANGES.txt
lucene/java/trunk/src/java/org/apache/lucene/document/Field.java
Modified: lucene/java/trunk/CHANGES.txt
URL: http://svn.apache.org/viewvc/lucene/java/trunk/CHANGES.txt?view=diff&rev=557553&r1=557552&r2=557553
==============================================================================
--- lucene/java/trunk/CHANGES.txt (original)
+++ lucene/java/trunk/CHANGES.txt Thu Jul 19 03:16:30 2007
@@ -18,6 +18,10 @@
2. LUCENE-944: Remove deprecated methods setUseScorer14() and
getUseScorer14() from BooleanQuery. (Paul Elschot via Michael Busch)
+ 5. LUCENE-963: Add setters to Field to allow for re-using a single
+ Field instance during indexing. This is a sizable performance
+ gain, especially for small documents. (Mike McCandless)
+
Bug fixes
1. LUCENE-933: QueryParser fixed to not produce empty sub
Modified: lucene/java/trunk/src/java/org/apache/lucene/document/Field.java
URL: http://svn.apache.org/viewvc/lucene/java/trunk/src/java/org/apache/lucene/document/Field.java?view=diff&rev=557553&r1=557552&r2=557553
==============================================================================
--- lucene/java/trunk/src/java/org/apache/lucene/document/Field.java (original)
+++ lucene/java/trunk/src/java/org/apache/lucene/document/Field.java Thu Jul 19 03:16:30 2007
@@ -156,30 +156,35 @@
public TokenStream tokenStreamValue() { return fieldsData instanceof TokenStream ? (TokenStream)fieldsData : null; }
- /** Expert: change the value of this field. This can be
- * used during indexing to re-use a single Field instance
- * to improve indexing speed. */
+ /** <p>Expert: change the value of this field. This can
+ * be used during indexing to re-use a single Field
+ * instance to improve indexing speed by avoiding GC cost
+ * of new'ing and reclaiming Field instances. Typically
+ * a single {@link Document} instance is re-used as
+ * well. This helps most on small documents.</p>
+ *
+ * <p>Note that you should only use this method after the
+ * Field has been consumed (ie, the {@link Document}
+ * containing this Field has been added to the index).
+ * Also, each Field instance should only be used once
+ * within a single {@link Document} instance. See <a
+ * href="http://wiki.apache.org/lucene-java/ImproveIndexingSpeed">ImproveIndexingSpeed</a>
+ * for details.</p> */
public void setValue(String value) {
fieldsData = value;
}
- /** Expert: change the value of this field. This can be
- * used during indexing to re-use a single Field instance
- * to improve indexing speed. */
+ /** Expert: change the value of this field. See <a href="#setValue(java.lang.String)">setValue(String)</a>. */
public void setValue(Reader value) {
fieldsData = value;
}
- /** Expert: change the value of this field. This can be
- * used during indexing to re-use a single Field instance
- * to improve indexing speed. */
+ /** Expert: change the value of this field. See <a href="#setValue(java.lang.String)">setValue(String)</a>. */
public void setValue(byte[] value) {
fieldsData = value;
}
- /** Expert: change the value of this field. This can be
- * used during indexing to re-use a single Field instance
- * to improve indexing speed. */
+ /** Expert: change the value of this field. See <a href="#setValue(java.lang.String)">setValue(String)</a>. */
public void setValue(TokenStream value) {
fieldsData = value;
}