pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / queryparser / src / test / org / apache / lucene / queryParser / spans / SpansValidatorQueryNodeProcessor.java

diff --git a/lucene-java-3.5.0/lucene/contrib/queryparser/src/test/org/apache/lucene/queryParser/spans/SpansValidatorQueryNodeProcessor.java b/lucene-java-3.5.0/lucene/contrib/queryparser/src/test/org/apache/lucene/queryParser/spans/SpansValidatorQueryNodeProcessor.java
new file mode 100644 (file)
index 0000000..335adb4
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+++ b/lucene-java-3.5.0/lucene/contrib/queryparser/src/test/org/apache/lucene/queryParser/spans/SpansValidatorQueryNodeProcessor.java
@@ -0,0 +1,72 @@
+package org.apache.lucene.queryParser.spans;
+
+/**
+ * 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.
+ */
+
+import java.util.List;
+
+import org.apache.lucene.messages.MessageImpl;
+import org.apache.lucene.queryParser.core.QueryNodeException;
+import org.apache.lucene.queryParser.core.messages.QueryParserMessages;
+import org.apache.lucene.queryParser.core.nodes.AndQueryNode;
+import org.apache.lucene.queryParser.core.nodes.BooleanQueryNode;
+import org.apache.lucene.queryParser.core.nodes.FieldQueryNode;
+import org.apache.lucene.queryParser.core.nodes.OrQueryNode;
+import org.apache.lucene.queryParser.core.nodes.QueryNode;
+import org.apache.lucene.queryParser.core.processors.QueryNodeProcessorImpl;
+
+/**
+ * Validates every query node in a query node tree. This processor will pass
+ * fine if the query nodes are only {@link BooleanQueryNode}s,
+ * {@link OrQueryNode}s or {@link FieldQueryNode}s, otherwise an exception will
+ * be thrown. <br/>
+ * <br/>
+ * 
+ * If they are {@link AndQueryNode} or an instance of anything else that
+ * implements {@link FieldQueryNode} the exception will also be thrown.
+ */
+public class SpansValidatorQueryNodeProcessor extends QueryNodeProcessorImpl {
+
+  @Override
+  protected QueryNode postProcessNode(QueryNode node) throws QueryNodeException {
+
+    return node;
+
+  }
+
+  @Override
+  protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException {
+
+    if (!((node instanceof BooleanQueryNode && !(node instanceof AndQueryNode)) || node
+        .getClass() == FieldQueryNode.class)) {
+      throw new QueryNodeException(new MessageImpl(
+          QueryParserMessages.NODE_ACTION_NOT_SUPPORTED));
+    }
+
+    return node;
+
+  }
+
+  @Override
+  protected List<QueryNode> setChildrenOrder(List<QueryNode> children)
+      throws QueryNodeException {
+
+    return children;
+
+  }
+
+}