svn commit: r615227 - /jackrabbit/trunk/jackrabbit-core/src/main/java/org/apache/jackrabbit/core/query/lucene/FieldSelectors.java

[mr...@apache.org]

Author: mreutegg
Date: Fri Jan 25 06:11:59 2008
New Revision: 615227

URL: http://svn.apache.org/viewvc?rev=615227&view=rev
Log:
JCR-1337: Optimize first execution queries for DescendantSelfAxisWeight/ChildAxisQuery
- forgot to commit new class FieldSelectors

Added:
    jackrabbit/trunk/jackrabbit-core/src/main/java/org/apache/jackrabbit/core/query/lucene/FieldSelectors.java   (with props)

Added: jackrabbit/trunk/jackrabbit-core/src/main/java/org/apache/jackrabbit/core/query/lucene/FieldSelectors.java
URL: http://svn.apache.org/viewvc/jackrabbit/trunk/jackrabbit-core/src/main/java/org/apache/jackrabbit/core/query/lucene/FieldSelectors.java?rev=615227&view=auto
==============================================================================
--- jackrabbit/trunk/jackrabbit-core/src/main/java/org/apache/jackrabbit/core/query/lucene/FieldSelectors.java (added)
+++ jackrabbit/trunk/jackrabbit-core/src/main/java/org/apache/jackrabbit/core/query/lucene/FieldSelectors.java Fri Jan 25 06:11:59 2008
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.jackrabbit.core.query.lucene;
+
+import org.apache.lucene.document.FieldSelector;
+import org.apache.lucene.document.FieldSelectorResult;
+
+/**
+ * <code>FieldSelectors</code> contains commonly used field selectors.
+ */
+public class FieldSelectors {
+
+    /**
+     * Do not instanciate.
+     */
+    private FieldSelectors() {
+    }
+
+    public static final FieldSelector UUID = new FieldSelector() {
+        /**
+         * Only accepts {@link FieldNames#UUID}.
+         *
+         * @param fieldName the field name to check.
+         * @return result.
+         */
+        public FieldSelectorResult accept(String fieldName) {
+            if (FieldNames.UUID == fieldName) {
+                return FieldSelectorResult.LOAD_AND_BREAK;
+            } else {
+                return FieldSelectorResult.NO_LOAD;
+            }
+        }
+    };
+
+    public static final FieldSelector UUID_AND_PARENT = new FieldSelector() {
+        /**
+         * Accepts {@link FieldNames#UUID} and {@link FieldNames#PARENT}.
+         *
+         * @param fieldName the field name to check.
+         * @return result.
+         */
+        public FieldSelectorResult accept(String fieldName) {
+            if (FieldNames.UUID == fieldName) {
+                return FieldSelectorResult.LOAD;
+            } else if (FieldNames.PARENT == fieldName) {
+                return FieldSelectorResult.LOAD;
+            } else {
+                return FieldSelectorResult.NO_LOAD;
+            }
+        }
+    };
+}

Propchange: jackrabbit/trunk/jackrabbit-core/src/main/java/org/apache/jackrabbit/core/query/lucene/FieldSelectors.java
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