pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / contrib / queries / src / java / org / apache / lucene / search / regex / JakartaRegexpCapabilities.java

diff --git a/lucene-java-3.4.0/lucene/contrib/queries/src/java/org/apache/lucene/search/regex/JakartaRegexpCapabilities.java b/lucene-java-3.4.0/lucene/contrib/queries/src/java/org/apache/lucene/search/regex/JakartaRegexpCapabilities.java
deleted file mode 100644 (file)
index 44cc0e3..0000000
--- a/lucene-java-3.4.0/lucene/contrib/queries/src/java/org/apache/lucene/search/regex/JakartaRegexpCapabilities.java
+++ /dev/null
@@ -1,123 +0,0 @@
-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.regexp.RE;
-import org.apache.regexp.REProgram;
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-
-/**
- * Implementation tying <a href="http://jakarta.apache.org/regexp">Jakarta
- * Regexp</a> to RegexQuery. Jakarta Regepx internally supports a
- * {@link #prefix} implementation which can offer performance gains under
- * certain circumstances. Yet, the implementation appears to be rather shaky as
- * it doesn't always provide a prefix even if one would exist.
- */
-public class JakartaRegexpCapabilities implements RegexCapabilities {
-  private RE regexp;
-
-  private static Field prefixField;
-  private static Method getPrefixMethod;
-  static {
-    try {
-      getPrefixMethod = REProgram.class.getMethod("getPrefix");
-    } catch (Exception e) {
-      getPrefixMethod = null;
-    }
-    try {
-      prefixField = REProgram.class.getDeclaredField("prefix");
-      prefixField.setAccessible(true);
-    } catch (Exception e) {
-      prefixField = null;
-    }
-  }
-  
-  // Define the flags that are possible. Redefine them here
-  // to avoid exposing the RE class to the caller.
-  
-  private int flags = RE.MATCH_NORMAL;
-
-  /**
-   * Flag to specify normal, case-sensitive matching behaviour. This is the default.
-   */
-  public static final int FLAG_MATCH_NORMAL = RE.MATCH_NORMAL;
-  
-  /**
-   * Flag to specify that matching should be case-independent (folded)
-   */
-  public static final int FLAG_MATCH_CASEINDEPENDENT = RE.MATCH_CASEINDEPENDENT;
- 
-  /**
-   * Constructs a RegexCapabilities with the default MATCH_NORMAL match style.
-   */
-  public JakartaRegexpCapabilities() {}
-  
-  /**
-   * Constructs a RegexCapabilities with the provided match flags.
-   * Multiple flags should be ORed together.
-   * 
-   * @param flags The matching style
-   */
-  public JakartaRegexpCapabilities(int flags)
-  {
-    this.flags = flags;
-  }
-  
-  public void compile(String pattern) {
-    regexp = new RE(pattern, this.flags);
-  }
-
-  public boolean match(String string) {
-    return regexp.match(string);
-  }
-
-  public String prefix() {
-    try {
-      final char[] prefix;
-      if (getPrefixMethod != null) {
-        prefix = (char[]) getPrefixMethod.invoke(regexp.getProgram());
-      } else if (prefixField != null) {
-        prefix = (char[]) prefixField.get(regexp.getProgram());
-      } else {
-        return null;
-      }
-      return prefix == null ? null : new String(prefix);
-    } catch (Exception e) {
-      // if we cannot get the prefix, return none
-      return null;
-    }
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) return true;
-    if (o == null || getClass() != o.getClass()) return false;
-
-    final JakartaRegexpCapabilities that = (JakartaRegexpCapabilities) o;
-
-    if (regexp != null ? !regexp.equals(that.regexp) : that.regexp != null) return false;
-
-    return true;
-  }
-
-  @Override
-  public int hashCode() {
-    return (regexp != null ? regexp.hashCode() : 0);
-  }
-}