| /* |
| * 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. |
| */ |
| /** |
| * A test udf to test that users can pass in escaped dot |
| * as part of a regex to udf's argument. |
| * Example: In perl the regex would be "www\.abc\.com" - |
| * the user's intent is to supply this as a regex pattern |
| * where dot (.) is escaped. As a java |
| * string this would be "www\\.abc\\.com" - the parser should |
| * eventually give this java string to the udf. In pig script too |
| * the user would give this as 'www\\.abc\\.com' |
| */ |
| package org.apache.pig.test; |
| |
| import java.io.IOException; |
| |
| import java.util.regex.Matcher; |
| |
| import java.util.regex.Pattern; |
| |
| import org.apache.pig.EvalFunc; |
| |
| import org.apache.pig.data.Tuple; |
| |
| public class RegexGroupCount extends EvalFunc<Integer> { |
| |
| private final Pattern pattern_; |
| |
| public RegexGroupCount(String patternStr) { |
| |
| System.out.println("My pattern supplied is "+patternStr); |
| |
| System.out.println("Equality test "+patternStr.equals("www\\.xyz\\.com/sports")); |
| |
| pattern_ = Pattern.compile(patternStr, Pattern.DOTALL|Pattern.CASE_INSENSITIVE); |
| |
| } |
| |
| //@Override |
| |
| public Integer exec(Tuple input) throws IOException { |
| |
| int i = 9999; |
| |
| if (input == null || input.size() == 0) { return 8888; } |
| |
| String istr = (String) input.get(0); |
| |
| System.out.println("My input is: "+istr); |
| |
| try { |
| |
| i = 0; |
| |
| Matcher matcher = pattern_.matcher(istr); |
| |
| while (matcher.find()) { |
| |
| i++; |
| |
| } |
| |
| } catch (NullPointerException e) { |
| |
| i = 7777; |
| |
| } catch (Exception e) { |
| |
| i = 6666; |
| |
| throw new IOException("Caught exception processing RegexGroupCount", e); |
| |
| } |
| |
| return i; |
| |
| } |
| |
| } |