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/tags/release-0.1-rc2/hive/external/ql/src/java/org/apache/hadoop/hive/ql/udf/UDAFWrongArgLengthForTestCase.java

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Java | 72 lines | 34 code | 13 blank | 25 comment | 3 complexity | 191430facbbc0802222577da0f257f1a MD5 | raw file
Possible License(s): Apache-2.0, BSD-3-Clause, JSON, CPL-1.0
  1. /**
  2. * Licensed to the Apache Software Foundation (ASF) under one
  3. * or more contributor license agreements. See the NOTICE file
  4. * distributed with this work for additional information
  5. * regarding copyright ownership. The ASF licenses this file
  6. * to you under the Apache License, Version 2.0 (the
  7. * "License"); you may not use this file except in compliance
  8. * with the License. You may obtain a copy of the License at
  9. *
  10. * http://www.apache.org/licenses/LICENSE-2.0
  11. *
  12. * Unless required by applicable law or agreed to in writing, software
  13. * distributed under the License is distributed on an "AS IS" BASIS,
  14. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15. * See the License for the specific language governing permissions and
  16. * limitations under the License.
  17. */
  18. package org.apache.hadoop.hive.ql.udf;
  19. import org.apache.hadoop.hive.ql.exec.UDAF;
  20. import org.apache.hadoop.hive.ql.exec.UDAFEvaluator;
  21. import org.apache.hadoop.io.LongWritable;
  22. import org.apache.hadoop.io.Text;
  23. /**
  24. * UDAFWrongArgLengthForTestCase.
  25. *
  26. */
  27. public class UDAFWrongArgLengthForTestCase extends UDAF {
  28. /**
  29. * UDAFWrongArgLengthForTestCaseEvaluator.
  30. *
  31. */
  32. public static class UDAFWrongArgLengthForTestCaseEvaluator implements
  33. UDAFEvaluator {
  34. private long mCount;
  35. public UDAFWrongArgLengthForTestCaseEvaluator() {
  36. super();
  37. init();
  38. }
  39. public void init() {
  40. mCount = 0;
  41. }
  42. Text emptyText = new Text();
  43. public boolean iterate(Object o) {
  44. if (o != null && !emptyText.equals(o)) {
  45. mCount++;
  46. }
  47. return true;
  48. }
  49. public LongWritable terminatePartial() {
  50. return new LongWritable(mCount);
  51. }
  52. public boolean merge() {
  53. return true;
  54. }
  55. public LongWritable terminate() {
  56. return new LongWritable(mCount);
  57. }
  58. }
  59. }