BATCH-377: A PreparedStatement can now be set on JdbcCursorItemReader. Also created a JobParametersPreparedStatementSetter, that when registered as a StepListener will set the values on a prepared statement with values from a PreparedStatement.

spring-batch-core/src/main/java/org/springframework/batch/core/resource/JobParametersPreparedStatementSetter.java

@@ -0,0 +1,76 @@
+/*
+ * 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.core.resource;
+
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+import java.util.List;
+import java.util.Map;
+
+import org.springframework.batch.core.JobParameters;
+import org.springframework.batch.core.StepExecution;
+import org.springframework.batch.core.StepListener;
+import org.springframework.batch.core.listener.StepListenerSupport;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.jdbc.core.PreparedStatementSetter;
+import org.springframework.jdbc.core.SqlTypeValue;
+import org.springframework.jdbc.core.StatementCreatorUtils;
+import org.springframework.util.Assert;
+
+/**
+ * Implementation of the {@link PreparedStatementSetter} interface that also implements
+ * {@link StepListener} and uses {@link JobParameters} to set the parameters on a 
+ * PreparedStatement.
+ * 
+ * @author Lucas Ward
+ *
+ */
+public class JobParametersPreparedStatementSetter extends StepListenerSupport implements
+		PreparedStatementSetter, InitializingBean {
+
+	private List parameterKeys;
+	private JobParameters jobParameters;
+	
+	public void setValues(PreparedStatement ps) throws SQLException {
+		Map parameters = jobParameters.getParameters();
+		for(int i = 0; i < parameterKeys.size(); i++){
+			Object arg = parameters.get(parameterKeys.get(i));
+			if(arg == null){
+				throw new IllegalStateException("No job parameter found for with key of: [" + parameterKeys.get(i) + "]");
+			}
+			StatementCreatorUtils.setParameterValue(ps, i + 1, SqlTypeValue.TYPE_UNKNOWN, arg);
+		}
+	}
+	
+	public void beforeStep(StepExecution stepExecution) {
+		this.jobParameters = stepExecution.getJobParameters();
+	}
+	
+	/**
+	 * The parameter names that will be pulled from the {@link JobParameters}.  It is
+	 * assumed that their order in the List is the order of the parameters in the 
+	 * PreparedStatement.
+	 * 
+	 * @return
+	 */
+	public void setParameterKeys(List parameterKeys) {
+		this.parameterKeys = parameterKeys;
+	}
+
+	public void afterPropertiesSet() throws Exception {
+		Assert.notNull(parameterKeys, "Parameters names must be provided");
+	}
+}