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BATCH-760: added a JdbcPagingQueryProvider abstraction and an SQL:2003 windowing functions implementation

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trisberg
2008-08-22 19:51:56 +00:00
parent fac1c2b22b
commit ecc19e96ff
3 changed files with 188 additions and 0 deletions
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spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/support/SqlWindowingPagingQueryProviderTests.java Normal file
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/*
* Copyright 2006-2008 the original author or authors.
*
* Licensed 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.
*/
package org.springframework.batch.item.database.support;
import static org.junit.Assert.*;
import org.junit.Test;
/**
* @author Thomas Risberg
*/
public class SqlWindowingPagingQueryProviderTests {
JdbcPagingQueryProvider pagingQueryProvider = new SqlWindowingPagingQueryProvider();
private int pageSize = 100;
private String selectClause = "id, name, age";
private String fromClause = "foo";
private String whereClaues = "bar = 1";
private String sortKey = "id";
@Test
public void testGenerateFirstPageQuery() {
String sql = "SELECT * FROM ( SELECT id, name, age, ROW_NUMBER() OVER (ORDER BY id ASC) AS ROW_NUMBER FROM foo WHERE bar = 1) WHERE ROW_NUMBER <= 100";
String s = pagingQueryProvider.generateFirstPageQuery(pageSize, selectClause, fromClause, whereClaues, sortKey);
assertEquals("", sql, s);
}
@Test
public void testGenerateRemainingPagesQuery() {
String sql = "SELECT * FROM ( SELECT id, name, age, ROW_NUMBER() OVER (ORDER BY id ASC) AS ROW_NUMBER FROM foo WHERE id > ? AND bar = 1) WHERE ROW_NUMBER <= 100";
String s = pagingQueryProvider.generateRemainingPagesQuery(pageSize, selectClause, fromClause, whereClaues, sortKey);
assertEquals("", sql, s);
}
@Test
public void testGenerateJumpToItemQuery() {
String sql = "SELECT SORT_KEY FROM ( SELECT id AS SORT_KEY, ROW_NUMBER() OVER (ORDER BY id ASC) AS ROW_NUMBER FROM foo WHERE bar = 1) WHERE ROW_NUMBER = 100";
String s = pagingQueryProvider.generateJumpToItemQuery(145, pageSize, selectClause, fromClause, whereClaues, sortKey);
assertEquals("", sql, s);
}
}