pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/core/nodes/AnyQueryNode.java b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/core/nodes/AnyQueryNode.java
new file mode 100644 (file)
index 0000000..80818d8
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/core/nodes/AnyQueryNode.java
@@ -0,0 +1,146 @@
+package org.apache.lucene.queryParser.core.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.parser.EscapeQuerySyntax;
+
+/**
+ * A {@link AnyQueryNode} represents an ANY operator performed on a list of
+ * nodes.
+ */
+public class AnyQueryNode extends AndQueryNode {
+  private static final long serialVersionUID = 1000791433562954187L;
+
+  private CharSequence field = null;
+  private int minimumMatchingmElements = 0;
+
+  /**
+   * @param clauses
+   *          - the query nodes to be or'ed
+   */
+  public AnyQueryNode(List<QueryNode> clauses, CharSequence field,
+      int minimumMatchingElements) {
+    super(clauses);
+    this.field = field;
+    this.minimumMatchingmElements = minimumMatchingElements;
+
+    if (clauses != null) {
+
+      for (QueryNode clause : clauses) {
+
+        if (clause instanceof FieldQueryNode) {
+
+          if (clause instanceof QueryNodeImpl) {
+            ((QueryNodeImpl) clause).toQueryStringIgnoreFields = true;
+          }
+
+          if (clause instanceof FieldableNode) {
+            ((FieldableNode) clause).setField(field);
+          }
+
+        }
+      }
+
+    }
+
+  }
+
+  public int getMinimumMatchingElements() {
+    return this.minimumMatchingmElements;
+  }
+
+  /**
+   * returns null if the field was not specified
+   * 
+   * @return the field
+   */
+  public CharSequence getField() {
+    return this.field;
+  }
+
+  /**
+   * returns - null if the field was not specified
+   * 
+   * @return the field as a String
+   */
+  public String getFieldAsString() {
+    if (this.field == null)
+      return null;
+    else
+      return this.field.toString();
+  }
+
+  /**
+   * @param field
+   *          - the field to set
+   */
+  public void setField(CharSequence field) {
+    this.field = field;
+  }
+
+  @Override
+  public QueryNode cloneTree() throws CloneNotSupportedException {
+    AnyQueryNode clone = (AnyQueryNode) super.cloneTree();
+
+    clone.field = this.field;
+    clone.minimumMatchingmElements = this.minimumMatchingmElements;
+
+    return clone;
+  }
+
+  @Override
+  public String toString() {
+    if (getChildren() == null || getChildren().size() == 0)
+      return "<any field='" + this.field + "'  matchelements="
+          + this.minimumMatchingmElements + "/>";
+    StringBuilder sb = new StringBuilder();
+    sb.append("<any field='" + this.field + "'  matchelements="
+        + this.minimumMatchingmElements + ">");
+    for (QueryNode clause : getChildren()) {
+      sb.append("\n");
+      sb.append(clause.toString());
+    }
+    sb.append("\n</any>");
+    return sb.toString();
+  }
+
+  @Override
+  public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser) {
+    String anySTR = "ANY " + this.minimumMatchingmElements;
+
+    StringBuilder sb = new StringBuilder();
+    if (getChildren() == null || getChildren().size() == 0) {
+      // no childs case
+    } else {
+      String filler = "";
+      for (QueryNode clause : getChildren()) {
+        sb.append(filler).append(clause.toQueryString(escapeSyntaxParser));
+        filler = " ";
+      }
+    }
+
+    if (isDefaultField(this.field)) {
+      return "( " + sb.toString() + " ) " + anySTR;
+    } else {
+      return this.field + ":(( " + sb.toString() + " ) " + anySTR + ")";
+    }
+  }
+
+}