pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / queryparser / src / java / org / apache / lucene / queryParser / standard / nodes / MultiPhraseQueryNode.java

diff --git a/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/nodes/MultiPhraseQueryNode.java b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/nodes/MultiPhraseQueryNode.java
new file mode 100644 (file)
index 0000000..38c5f3d
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+++ b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/nodes/MultiPhraseQueryNode.java
@@ -0,0 +1,110 @@
+package org.apache.lucene.queryParser.standard.nodes;
+
+/**
+ * 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.queryParser.core.nodes.FieldableNode;
+import org.apache.lucene.queryParser.core.nodes.QueryNode;
+import org.apache.lucene.queryParser.core.nodes.QueryNodeImpl;
+import org.apache.lucene.queryParser.core.parser.EscapeQuerySyntax;
+import org.apache.lucene.search.MultiPhraseQuery;
+import org.apache.lucene.search.PhraseQuery;
+
+/**
+ * A {@link MultiPhraseQueryNode} indicates that its children should be used to
+ * build a {@link MultiPhraseQuery} instead of {@link PhraseQuery}.
+ */
+public class MultiPhraseQueryNode extends QueryNodeImpl implements
+    FieldableNode {
+
+  private static final long serialVersionUID = -2138501723963320158L;
+
+  public MultiPhraseQueryNode() {
+    setLeaf(false);
+    allocate();
+
+  }
+
+  @Override
+  public String toString() {
+    if (getChildren() == null || getChildren().size() == 0)
+      return "<multiPhrase/>";
+    StringBuilder sb = new StringBuilder();
+    sb.append("<multiPhrase>");
+    for (QueryNode child : getChildren()) {
+      sb.append("\n");
+      sb.append(child.toString());
+    }
+    sb.append("\n</multiPhrase>");
+    return sb.toString();
+  }
+
+  public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser) {
+    if (getChildren() == null || getChildren().size() == 0)
+      return "";
+
+    StringBuilder sb = new StringBuilder();
+    String filler = "";
+    for (QueryNode child : getChildren()) {
+      sb.append(filler).append(child.toQueryString(escapeSyntaxParser));
+      filler = ",";
+    }
+
+    return "[MTP[" + sb.toString() + "]]";
+  }
+
+  @Override
+  public QueryNode cloneTree() throws CloneNotSupportedException {
+    MultiPhraseQueryNode clone = (MultiPhraseQueryNode) super.cloneTree();
+
+    // nothing to do
+
+    return clone;
+  }
+
+  public CharSequence getField() {
+    List<QueryNode> children = getChildren();
+
+    if (children == null || children.size() == 0) {
+      return null;
+
+    } else {
+      return ((FieldableNode) children.get(0)).getField();
+    }
+
+  }
+
+  public void setField(CharSequence fieldName) {
+    List<QueryNode> children = getChildren();
+
+    if (children != null) {
+
+      for (QueryNode child : children) {
+
+        if (child instanceof FieldableNode) {
+          ((FieldableNode) child).setField(fieldName);
+        }
+
+      }
+
+    }
+
+  }
+
+} // end class MultitermQueryNode