X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/processors/ParametricRangeQueryNodeProcessor.java

diff --git a/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/processors/ParametricRangeQueryNodeProcessor.java b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/processors/ParametricRangeQueryNodeProcessor.java
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+++ b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/processors/ParametricRangeQueryNodeProcessor.java
@@ -0,0 +1,168 @@
+package org.apache.lucene.queryParser.standard.processors;
+
+/**
+ * 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.text.Collator;
+import java.text.DateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+
+import org.apache.lucene.document.DateField;
+import org.apache.lucene.document.DateTools;
+import org.apache.lucene.document.DateTools.Resolution;
+import org.apache.lucene.queryParser.core.QueryNodeException;
+import org.apache.lucene.queryParser.core.config.FieldConfig;
+import org.apache.lucene.queryParser.core.config.QueryConfigHandler;
+import org.apache.lucene.queryParser.core.nodes.ParametricQueryNode;
+import org.apache.lucene.queryParser.core.nodes.ParametricRangeQueryNode;
+import org.apache.lucene.queryParser.core.nodes.QueryNode;
+import org.apache.lucene.queryParser.core.nodes.ParametricQueryNode.CompareOperator;
+import org.apache.lucene.queryParser.core.processors.QueryNodeProcessorImpl;
+import org.apache.lucene.queryParser.standard.config.StandardQueryConfigHandler.ConfigurationKeys;
+import org.apache.lucene.queryParser.standard.nodes.RangeQueryNode;
+
+/**
+ * This processor converts {@link ParametricRangeQueryNode} objects to
+ * {@link RangeQueryNode} objects. It reads the lower and upper bounds value
+ * from the {@link ParametricRangeQueryNode} object and try to parse their
+ * values using a {@link DateFormat}. If the values cannot be parsed to a date
+ * value, it will only create the {@link RangeQueryNode} using the
+ * non-parsed values. <br/>
+ * <br/>
+ * If a {@link ConfigurationKeys#LOCALE} is defined in the {@link QueryConfigHandler} it
+ * will be used to parse the date, otherwise {@link Locale#getDefault()} will be
+ * used. <br/>
+ * <br/>
+ * If a {@link ConfigurationKeys#DATE_RESOLUTION} is defined and the {@link Resolution} is
+ * not <code>null</code> it will also be used to parse the date value. <br/>
+ * <br/>
+ * 
+ * @see ConfigurationKeys#DATE_RESOLUTION
+ * @see ConfigurationKeys#LOCALE
+ * @see org.apache.lucene.queryParser.standard.nodes.TermRangeQueryNode
+ * @see ParametricRangeQueryNode
+ */
+public class ParametricRangeQueryNodeProcessor extends QueryNodeProcessorImpl {
+  
+  public ParametricRangeQueryNodeProcessor() {
+  // empty constructor
+  }
+  
+  @Override
+  protected QueryNode postProcessNode(QueryNode node) throws QueryNodeException {
+    
+    if (node instanceof ParametricRangeQueryNode) {
+      ParametricRangeQueryNode parametricRangeNode = (ParametricRangeQueryNode) node;
+      ParametricQueryNode upper = parametricRangeNode.getUpperBound();
+      ParametricQueryNode lower = parametricRangeNode.getLowerBound();
+      DateTools.Resolution dateRes = null;
+      boolean inclusive = false;
+      
+      Locale locale = getQueryConfigHandler().get(ConfigurationKeys.LOCALE,
+          Locale.getDefault());
+      
+      Collator collator = getQueryConfigHandler().get(
+          ConfigurationKeys.RANGE_COLLATOR);
+      
+      
+      CharSequence field = parametricRangeNode.getField();
+      String fieldStr = null;
+
+      if (field != null) {
+        fieldStr = field.toString();
+      }
+
+      FieldConfig fieldConfig = getQueryConfigHandler()
+          .getFieldConfig(fieldStr);
+
+      if (fieldConfig != null) {
+        dateRes = fieldConfig.get(ConfigurationKeys.DATE_RESOLUTION);
+      }
+
+      if (upper.getOperator() == CompareOperator.LE) {
+        inclusive = true;
+
+      } else if (lower.getOperator() == CompareOperator.GE) {
+        inclusive = true;
+      }
+
+      String part1 = lower.getTextAsString();
+      String part2 = upper.getTextAsString();
+
+      try {
+        DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT, locale);
+        df.setLenient(true);
+        Date d1 = df.parse(part1);
+        Date d2 = df.parse(part2);
+        if (inclusive) {
+          // The user can only specify the date, not the time, so make sure
+          // the time is set to the latest possible time of that date to really
+          // include all documents:
+          Calendar cal = Calendar.getInstance(locale);
+          cal.setTime(d2);
+          cal.set(Calendar.HOUR_OF_DAY, 23);
+          cal.set(Calendar.MINUTE, 59);
+          cal.set(Calendar.SECOND, 59);
+          cal.set(Calendar.MILLISECOND, 999);
+          d2 = cal.getTime();
+        }
+
+        if (dateRes == null) {
+          // no default or field specific date resolution has been set,
+          // use deprecated DateField to maintain compatibilty with
+          // pre-1.9 Lucene versions.
+          part1 = DateField.dateToString(d1);
+          part2 = DateField.dateToString(d2);
+
+        } else {
+          part1 = DateTools.dateToString(d1, dateRes);
+          part2 = DateTools.dateToString(d2, dateRes);
+        }
+      } catch (Exception e) {
+        // do nothing
+      }
+
+      lower.setText(part1);
+      upper.setText(part2);
+
+      return new RangeQueryNode(lower, upper, collator);
+
+    }
+
+    return node;
+
+  }
+
+  @Override
+  protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException {
+
+    return node;
+
+  }
+
+  @Override
+  protected List<QueryNode> setChildrenOrder(List<QueryNode> children)
+      throws QueryNodeException {
+
+    return children;
+
+  }
+
+}