BATCH-760: first cut of IbatisPagingItemReader, added AbstractPagingItemReader with common logic for all PagingItemReaders

spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/IbatisPagingItemReaderCommonTests.java

@@ -0,0 +1,52 @@
+package org.springframework.batch.item.database;
+
+import org.junit.runner.RunWith;
+import org.junit.internal.runners.JUnit4ClassRunner;
+import org.springframework.batch.item.sample.Foo;
+import org.springframework.batch.item.ItemReader;
+import org.springframework.batch.item.ExecutionContext;
+import org.springframework.batch.item.database.support.IbatisKeyCollector;
+import org.springframework.orm.ibatis.SqlMapClientFactoryBean;
+import org.springframework.core.io.ClassPathResource;
+import com.ibatis.sqlmap.client.SqlMapClient;
+
+@SuppressWarnings("unchecked")
+@RunWith(JUnit4ClassRunner.class)
+public class IbatisPagingItemReaderCommonTests extends CommonDatabaseItemStreamItemReaderTests {
+
+	protected ItemReader<Foo> getItemReader() throws Exception {
+		SqlMapClientFactoryBean factory = new SqlMapClientFactoryBean();
+		factory.setConfigLocation(new ClassPathResource("ibatis-config.xml", getClass()));
+		factory.setDataSource(getDataSource());
+		factory.afterPropertiesSet();
+		SqlMapClient sqlMapClient = createSqlMapClient();
+
+		IbatisPagingItemReader reader = new IbatisPagingItemReader();
+		reader.setQueryId("getAllFoos");
+		reader.setSqlMapClient(sqlMapClient);
+		reader.setSaveState(true);
+
+		reader.afterPropertiesSet();
+
+		return reader;
+	}
+
+	private SqlMapClient createSqlMapClient() throws Exception {
+		SqlMapClientFactoryBean factory = new SqlMapClientFactoryBean();
+		factory.setConfigLocation(new ClassPathResource("ibatis-config.xml", getClass()));
+		factory.setDataSource(getDataSource());
+		factory.afterPropertiesSet();
+		return (SqlMapClient) factory.getObject();
+	}
+
+	protected void pointToEmptyInput(ItemReader<Foo> tested) throws Exception {
+		IbatisPagingItemReader reader = (IbatisPagingItemReader) tested;
+		reader.close(new ExecutionContext());
+
+		reader.setQueryId("getNoFoos");
+		reader.afterPropertiesSet();
+
+		reader.open(new ExecutionContext());
+	}
+
+}