/*
* Copyright 2006-2015 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.assertEquals;
import static org.junit.Assert.assertTrue;
import java.util.LinkedHashMap;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;
import org.springframework.batch.item.database.Order;
import org.springframework.util.StringUtils;
/**
* @author Thomas Risberg
* @author Dave Syer
* @author Michael Minella
* @since 2.0
*/
public class SqlPagingQueryUtilsTests {
private Map<String, Order> sortKeys;
@Before
public void setUp() {
sortKeys = new LinkedHashMap<String, Order>();
sortKeys.put("ID", Order.ASCENDING);
}
@Test
public void testGenerateLimitSqlQuery() {
AbstractSqlPagingQueryProvider qp = new TestSqlPagingQueryProvider("FOO", "BAR", sortKeys);
assertEquals("SELECT FOO FROM BAR ORDER BY ID ASC LIMIT 100", SqlPagingQueryUtils.generateLimitSqlQuery(qp,
false, "LIMIT 100"));
assertEquals("SELECT FOO FROM BAR WHERE ((ID > ?)) ORDER BY ID ASC LIMIT 100", SqlPagingQueryUtils
.generateLimitSqlQuery(qp, true, "LIMIT 100"));
qp.setWhereClause("BAZ IS NOT NULL");
assertEquals("SELECT FOO FROM BAR WHERE BAZ IS NOT NULL ORDER BY ID ASC LIMIT 100", SqlPagingQueryUtils
.generateLimitSqlQuery(qp, false, "LIMIT 100"));
assertEquals("SELECT FOO FROM BAR WHERE (BAZ IS NOT NULL) AND ((ID > ?)) ORDER BY ID ASC LIMIT 100",
SqlPagingQueryUtils.generateLimitSqlQuery(qp, true, "LIMIT 100"));
}
@Test
public void testGenerateTopSqlQuery() {
AbstractSqlPagingQueryProvider qp = new TestSqlPagingQueryProvider("FOO", "BAR", sortKeys);
assertEquals("SELECT TOP 100 FOO FROM BAR ORDER BY ID ASC", SqlPagingQueryUtils.generateTopSqlQuery(qp, false,
"TOP 100"));
assertEquals("SELECT TOP 100 FOO FROM BAR WHERE ((ID > ?)) ORDER BY ID ASC", SqlPagingQueryUtils
.generateTopSqlQuery(qp, true, "TOP 100"));
qp.setWhereClause("BAZ IS NOT NULL");
assertEquals("SELECT TOP 100 FOO FROM BAR WHERE BAZ IS NOT NULL ORDER BY ID ASC", SqlPagingQueryUtils
.generateTopSqlQuery(qp, false, "TOP 100"));
assertEquals("SELECT TOP 100 FOO FROM BAR WHERE (BAZ IS NOT NULL) AND ((ID > ?)) ORDER BY ID ASC",
SqlPagingQueryUtils.generateTopSqlQuery(qp, true, "TOP 100"));
}
@Test
public void testGenerateRowNumSqlQuery() {
AbstractSqlPagingQueryProvider qp = new TestSqlPagingQueryProvider("FOO", "BAR", sortKeys);
assertEquals(
"SELECT * FROM (SELECT FOO FROM BAR ORDER BY ID ASC) WHERE ROWNUMBER <= 100",
SqlPagingQueryUtils.generateRowNumSqlQuery(qp, false, "ROWNUMBER <= 100"));
assertEquals(
"SELECT * FROM (SELECT FOO FROM BAR ORDER BY ID ASC) WHERE ROWNUMBER <= 100 AND ((ID > ?))",
SqlPagingQueryUtils.generateRowNumSqlQuery(qp, true, "ROWNUMBER <= 100"));
qp.setWhereClause("BAZ IS NOT NULL");
assertEquals(
"SELECT * FROM (SELECT FOO FROM BAR WHERE BAZ IS NOT NULL ORDER BY ID ASC) WHERE ROWNUMBER <= 100",
SqlPagingQueryUtils.generateRowNumSqlQuery(qp, false, "ROWNUMBER <= 100"));
assertEquals(
"SELECT * FROM (SELECT FOO FROM BAR WHERE BAZ IS NOT NULL ORDER BY ID ASC) WHERE ROWNUMBER <= 100 AND ((ID > ?))",
SqlPagingQueryUtils.generateRowNumSqlQuery(qp, true, "ROWNUMBER <= 100"));
}
@Test
public void testGenerateRowNumSqlQueryWithNesting() {
AbstractSqlPagingQueryProvider qp = new TestSqlPagingQueryProvider("FOO", "BAR", sortKeys);
assertEquals(
"SELECT FOO FROM (SELECT FOO, ROWNUM as TMP_ROW_NUM FROM (SELECT FOO FROM BAR ORDER BY ID ASC)) WHERE ROWNUMBER <= 100",
SqlPagingQueryUtils.generateRowNumSqlQueryWithNesting(qp, "FOO", false, "ROWNUMBER <= 100"));
}
@Test
public void testGenerateTopSqlQueryDescending() {
sortKeys.put("ID", Order.DESCENDING);
AbstractSqlPagingQueryProvider qp = new TestSqlPagingQueryProvider("FOO", "BAR", sortKeys);
assertEquals("SELECT TOP 100 FOO FROM BAR ORDER BY ID DESC", SqlPagingQueryUtils.generateTopSqlQuery(qp, false,
"TOP 100"));
assertEquals("SELECT TOP 100 FOO FROM BAR WHERE ((ID < ?)) ORDER BY ID DESC", SqlPagingQueryUtils
.generateTopSqlQuery(qp, true, "TOP 100"));
qp.setWhereClause("BAZ IS NOT NULL");
assertEquals("SELECT TOP 100 FOO FROM BAR WHERE BAZ IS NOT NULL ORDER BY ID DESC", SqlPagingQueryUtils
.generateTopSqlQuery(qp, false, "TOP 100"));
assertEquals("SELECT TOP 100 FOO FROM BAR WHERE (BAZ IS NOT NULL) AND ((ID < ?)) ORDER BY ID DESC",
SqlPagingQueryUtils.generateTopSqlQuery(qp, true, "TOP 100"));
}
@Test
public void testGenerateRowNumSqlQueryDescending() {
sortKeys.put("ID", Order.DESCENDING);
AbstractSqlPagingQueryProvider qp = new TestSqlPagingQueryProvider("FOO", "BAR", sortKeys);
assertEquals(
"SELECT * FROM (SELECT FOO FROM BAR ORDER BY ID DESC) WHERE ROWNUMBER <= 100",
SqlPagingQueryUtils.generateRowNumSqlQuery(qp, false, "ROWNUMBER <= 100"));
assertEquals(
"SELECT * FROM (SELECT FOO FROM BAR ORDER BY ID DESC) WHERE ROWNUMBER <= 100 AND ((ID < ?))",
SqlPagingQueryUtils.generateRowNumSqlQuery(qp, true, "ROWNUMBER <= 100"));
qp.setWhereClause("BAZ IS NOT NULL");
assertEquals(
"SELECT * FROM (SELECT FOO FROM BAR WHERE BAZ IS NOT NULL ORDER BY ID DESC) WHERE ROWNUMBER <= 100",
SqlPagingQueryUtils.generateRowNumSqlQuery(qp, false, "ROWNUMBER <= 100"));
assertEquals(
"SELECT * FROM (SELECT FOO FROM BAR WHERE BAZ IS NOT NULL ORDER BY ID DESC) WHERE ROWNUMBER <= 100 AND ((ID < ?))",
SqlPagingQueryUtils.generateRowNumSqlQuery(qp, true, "ROWNUMBER <= 100"));
}
@Test
public void testGenerateLimitJumpToQuery() {
AbstractSqlPagingQueryProvider qp = new TestSqlPagingQueryProvider("FOO", "BAR", sortKeys);
assertEquals("SELECT ID FROM BAR ORDER BY ID ASC LIMIT 100, 1", SqlPagingQueryUtils
.generateLimitJumpToQuery(qp, "LIMIT 100, 1"));
qp.setWhereClause("BAZ IS NOT NULL");
assertEquals("SELECT ID FROM BAR WHERE BAZ IS NOT NULL ORDER BY ID ASC LIMIT 100, 1",
SqlPagingQueryUtils.generateLimitJumpToQuery(qp, "LIMIT 100, 1"));
}
@Test
public void testGenerateTopJumpToQuery() {
AbstractSqlPagingQueryProvider qp = new TestSqlPagingQueryProvider("FOO", "BAR", sortKeys);
assertEquals("SELECT TOP 100, 1 ID FROM BAR ORDER BY ID ASC", SqlPagingQueryUtils
.generateTopJumpToQuery(qp, "TOP 100, 1"));
qp.setWhereClause("BAZ IS NOT NULL");
assertEquals("SELECT TOP 100, 1 ID FROM BAR WHERE BAZ IS NOT NULL ORDER BY ID ASC",
SqlPagingQueryUtils.generateTopJumpToQuery(qp, "TOP 100, 1"));
}
@Test
public void testGenerateTopJumpQueryDescending() {
sortKeys.put("ID", Order.DESCENDING);
AbstractSqlPagingQueryProvider qp = new TestSqlPagingQueryProvider("FOO", "BAR", sortKeys);
String query = SqlPagingQueryUtils.generateTopJumpToQuery(qp, "TOP 100, 1");
assertTrue("Wrong query: " + query, query.contains("ID DESC"));
assertEquals("Wrong query: " + query, 0, StringUtils.countOccurrencesOf(query, "ASC"));
assertEquals("Wrong query: " + query, 1, StringUtils.countOccurrencesOf(query, "DESC"));
qp.setWhereClause("BAZ IS NOT NULL");
assertTrue("Wrong query: " + query, query.contains("ID DESC"));
}
@Test
public void testGenerateLimitJumpQueryDescending() {
sortKeys.put("ID", Order.DESCENDING);
AbstractSqlPagingQueryProvider qp = new TestSqlPagingQueryProvider("FOO", "BAR", sortKeys);
String query = SqlPagingQueryUtils.generateLimitJumpToQuery(qp, "LIMIT 100, 1");
assertTrue("Wrong query: " + query, query.contains("ID DESC"));
assertEquals("Wrong query: " + query, 0, StringUtils.countOccurrencesOf(query, "ASC"));
assertEquals("Wrong query: " + query, 1, StringUtils.countOccurrencesOf(query, "DESC"));
qp.setWhereClause("BAZ IS NOT NULL");
assertTrue("Wrong query: " + query, query.contains("ID DESC"));
}
private static class TestSqlPagingQueryProvider extends AbstractSqlPagingQueryProvider {
public TestSqlPagingQueryProvider(String select, String from, Map<String, Order> sortKeys) {
setSelectClause(select);
setFromClause(from);
setSortKeys(sortKeys);
}
@Override
public String generateFirstPageQuery(int pageSize) {
return null;
}
@Override
public String generateRemainingPagesQuery(int pageSize) {
return null;
}
@Override
public String generateJumpToItemQuery(int itemIndex, int pageSize) {
return null;
}
}
}