pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / queries / src / java / org / apache / lucene / search / regex / RegexQuery.java

diff --git a/lucene-java-3.5.0/lucene/contrib/queries/src/java/org/apache/lucene/search/regex/RegexQuery.java b/lucene-java-3.5.0/lucene/contrib/queries/src/java/org/apache/lucene/search/regex/RegexQuery.java
new file mode 100644 (file)
index 0000000..9562d5a
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/contrib/queries/src/java/org/apache/lucene/search/regex/RegexQuery.java
@@ -0,0 +1,97 @@
+package org.apache.lucene.search.regex;
+
+/**
+ * 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.search.MultiTermQuery;
+import org.apache.lucene.search.FilteredTermEnum;
+import org.apache.lucene.index.Term;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.util.ToStringUtils;
+
+import java.io.IOException;
+
+/** Implements the regular expression term search query.
+ * The expressions supported depend on the regular expression implementation
+ * used by way of the {@link RegexCapabilities} interface.
+ *
+ * @see RegexTermEnum
+ */
+public class RegexQuery extends MultiTermQuery implements RegexQueryCapable {
+  private RegexCapabilities regexImpl = new JavaUtilRegexCapabilities();
+  private Term term;
+
+  /** Constructs a query for terms matching <code>term</code>. */
+  public RegexQuery(Term term) {
+    this.term = term;
+  }
+  
+  public Term getTerm() { return term; }
+
+  /**
+   * Defines which {@link RegexCapabilities} implementation is used by this instance.
+   *
+   * @param impl
+   */
+  public void setRegexImplementation(RegexCapabilities impl) {
+    this.regexImpl = impl;
+  }
+
+  /**
+   * @return The implementation used by this instance.
+   */
+  public RegexCapabilities getRegexImplementation() {
+    return regexImpl;
+  }
+
+  @Override
+  protected FilteredTermEnum getEnum(IndexReader reader) throws IOException {
+    return new RegexTermEnum(reader, term, regexImpl);
+  }
+
+  @Override
+  public String toString(String field) {
+    StringBuilder buffer = new StringBuilder();
+    if (!term.field().equals(field)) {
+      buffer.append(term.field());
+      buffer.append(":");
+    }
+    buffer.append(term.text());
+    buffer.append(ToStringUtils.boost(getBoost()));
+    return buffer.toString();
+  }
+
+  /* generated by IntelliJ IDEA */
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+    if (!super.equals(o)) return false;
+
+    final RegexQuery that = (RegexQuery) o;
+
+    return regexImpl.equals(that.regexImpl);
+  }
+
+  /* generated by IntelliJ IDEA */
+  @Override
+  public int hashCode() {
+    int result = super.hashCode();
+    result = 29 * result + regexImpl.hashCode();
+    return result;
+  }
+}