pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/builders/NumericRangeQueryNodeBuilder.java b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/builders/NumericRangeQueryNodeBuilder.java
new file mode 100644 (file)
index 0000000..3092b6a
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+++ b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/builders/NumericRangeQueryNodeBuilder.java
@@ -0,0 +1,102 @@
+package org.apache.lucene.queryParser.standard.builders;
+
+/**
+ * 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 org.apache.lucene.document.NumericField;
+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.QueryNode;
+import org.apache.lucene.queryParser.core.util.StringUtils;
+import org.apache.lucene.queryParser.standard.config.NumericConfig;
+import org.apache.lucene.queryParser.standard.nodes.NumericQueryNode;
+import org.apache.lucene.queryParser.standard.nodes.NumericRangeQueryNode;
+import org.apache.lucene.search.NumericRangeQuery;
+
+/**
+ * Builds {@link NumericRangeQuery}s out of {@link NumericRangeQueryNode}s.
+ *
+ * @see NumericRangeQuery
+ * @see NumericRangeQueryNode
+ */
+public class NumericRangeQueryNodeBuilder implements StandardQueryBuilder {
+  
+  /**
+   * Constructs a {@link NumericRangeQueryNodeBuilder} object.
+   */
+  public NumericRangeQueryNodeBuilder() {
+  // empty constructor
+  }
+  
+  public NumericRangeQuery<? extends Number> build(QueryNode queryNode)
+      throws QueryNodeException {
+    NumericRangeQueryNode numericRangeNode = (NumericRangeQueryNode) queryNode;
+    
+    NumericQueryNode lowerNumericNode = numericRangeNode.getLowerBound();
+    NumericQueryNode upperNumericNode = numericRangeNode.getUpperBound();
+    
+    Number lowerNumber, upperNumber;
+    
+    if (lowerNumericNode != null) {
+      lowerNumber = lowerNumericNode.getValue();
+    } else {
+      lowerNumber = null;
+    }
+    
+    if (upperNumericNode != null) {
+      upperNumber = upperNumericNode.getValue();
+    } else {
+      upperNumber = null;
+    }
+    
+    NumericConfig numericConfig = numericRangeNode.getNumericConfig();
+    NumericField.DataType numberType = numericConfig.getType();
+    String field = StringUtils.toString(numericRangeNode.getField());
+    boolean minInclusive = numericRangeNode.isLowerInclusive();
+    boolean maxInclusive = numericRangeNode.isUpperInclusive();
+    int precisionStep = numericConfig.getPrecisionStep();
+    
+    switch (numberType) {
+      
+      case LONG:
+        return NumericRangeQuery.newLongRange(field, precisionStep,
+            (Long) lowerNumber, (Long) upperNumber, minInclusive, maxInclusive);
+      
+      case INT:
+        return NumericRangeQuery.newIntRange(field, precisionStep,
+            (Integer) lowerNumber, (Integer) upperNumber, minInclusive,
+            maxInclusive);
+      
+      case FLOAT:
+        return NumericRangeQuery.newFloatRange(field, precisionStep,
+            (Float) lowerNumber, (Float) upperNumber, minInclusive,
+            maxInclusive);
+      
+      case DOUBLE:
+        return NumericRangeQuery.newDoubleRange(field, precisionStep,
+            (Double) lowerNumber, (Double) upperNumber, minInclusive,
+            maxInclusive);
+        
+        default :
+          throw new QueryNodeException(new MessageImpl(
+            QueryParserMessages.UNSUPPORTED_NUMERIC_DATA_TYPE, numberType));
+        
+    }
+  }
+  
+}