RESOLVED - issue BATCH-986: Provide factory bean for SqlPagingQueryProvider

Removed duplicate class SimpleDelegatingPagingQueryProvider.

spring-batch-infrastructure/src/main/java/org/springframework/batch/item/database/support/SimpleDelegatingPagingQueryProvider.java

@@ -1,96 +0,0 @@
-/*
- * 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.springframework.batch.support.DatabaseType.*;
-
-import java.util.Arrays;
-
-import org.springframework.batch.support.DatabaseType;
-import org.springframework.dao.InvalidDataAccessResourceUsageException;
-
-import javax.sql.DataSource;
-
-/**
- * Generic Paging Query Provider using standard SQL:2003 windowing functions.  These features are supported by
- * DB2, Oracle, SQL Server 2005, Sybase and Apache Derby version 10.4.1.3
- *
- * @author Thomas Risberg
- * @since 2.0
- */
-public class SimpleDelegatingPagingQueryProvider extends AbstractSqlPagingQueryProvider {
-
-	AbstractSqlPagingQueryProvider delegate;
-
-	@Override
-	public void init(DataSource dataSource) throws Exception {
-		super.init(dataSource);
-		
-		DatabaseType type = DatabaseType.fromMetaData(dataSource);
-		if (type == DERBY) {
-			delegate = new DerbyPagingQueryProvider();
-		}
-		else if (type == DB2 || type == DB2ZOS) {
-			delegate = new Db2PagingQueryProvider();
-		}
-		else if (type == HSQL) {
-			delegate = new HsqlPagingQueryProvider();
-		}
-		else if (type == SQLSERVER) {
-			delegate = new SqlServerPagingQueryProvider();
-		}
-		else if (type == MYSQL) {
-			delegate = new MySqlPagingQueryProvider();
-		}
-		else if (type == ORACLE) {
-			delegate = new OraclePagingQueryProvider();
-		}
-		else if (type == POSTGRES) {
-			delegate = new PostgresPagingQueryProvider();
-		}
-		else if (type == SYBASE) {
-			delegate = new SybasePagingQueryProvider();
-		}
-		else {
-			throw new InvalidDataAccessResourceUsageException(type.name() +
-					" is not a supported database.  The supported databases are " +
-					Arrays.toString(DatabaseType.values()));
-		}
-		delegate.setSelectClause(this.getSelectClause());
-		delegate.setFromClause(this.getFromClause());
-		if (this.getWhereClause() != null) {
-			delegate.setWhereClause(this.getWhereClause());
-		}
-		delegate.setSortKey(this.getSortKey());
-		delegate.init(dataSource);
-	}
-
-	@Override
-	public String generateFirstPageQuery(int pageSize) {
-		return delegate.generateFirstPageQuery(pageSize);
-	}
-
-	@Override
-	public String generateRemainingPagesQuery(int pageSize) {
-		return delegate.generateRemainingPagesQuery(pageSize);
-	}
-
-	@Override
-	public String generateJumpToItemQuery(int itemIndex, int pageSize) {
-		return delegate.generateJumpToItemQuery(itemIndex, pageSize);
-	}
-
-}