BATCH-1277:Added JobParameter setters to JobParametersBuilder

spring-batch-core/src/main/java/org/springframework/batch/core/JobParameters.java

@@ -35,6 +35,7 @@ import java.util.Map;
  * @author Lucas Ward
  * @since 1.0
  */
+@SuppressWarnings("serial")
 public class JobParameters implements Serializable {
 
 	private final Map<String,JobParameter> parameters;

spring-batch-core/src/main/java/org/springframework/batch/core/JobParametersBuilder.java

@@ -110,9 +110,22 @@ public class JobParametersBuilder {
 	 * Conversion method that takes the current state of this builder and
 	 * returns it as a JobruntimeParameters object.
 	 * 
-	 * @return a valid JobParameters object.
+	 * @return a valid {@link JobParameters} object.
 	 */
 	public JobParameters toJobParameters() {
 		return new JobParameters(parameterMap);
 	}
+
+	/**
+	 * Add a new {@link JobParameter} for the given key.
+	 * 
+	 * @param key - parameter accessor
+	 * @param jobParameter - runtime parameter
+	 * @return a reference to this object.
+	 */
+	public JobParametersBuilder addParameter(String key, JobParameter jobParameter) {
+		Assert.notNull(jobParameter, "JobParameter must not be null");
+		parameterMap.put(key, jobParameter);
+		return this;
+	}
 }

spring-batch-core/src/test/java/org/springframework/batch/core/JobParametersBuilderTests.java

@@ -5,6 +5,7 @@ package org.springframework.batch.core;
 
 import java.util.Date;
 import java.util.Iterator;
+import java.util.Map;
 
 import junit.framework.TestCase;
 
@@ -54,4 +55,12 @@ public class JobParametersBuilderTests extends TestCase {
 		assertEquals("bar", parameters.next());
 		assertEquals("spam", parameters.next());
 	}
+	
+	public void testAddJobParameter(){
+		JobParameter jobParameter = new JobParameter("bar");
+		parametersBuilder.addParameter("foo", jobParameter);
+		Map<String,JobParameter> parameters = parametersBuilder.toJobParameters().getParameters();
+		assertEquals(1, parameters.size());
+		assertEquals("bar", parameters.get("foo").getValue());
+	}
 }