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IN PROGRESS - BATCH-712: Upgrade ItemReaders to use Parameterized types

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parameterized MRIR
This commit is contained in:
robokaso
2008-07-18 12:10:56 +00:00
parent af5f9165f2
commit 44ee192ee4
4 changed files with 26 additions and 25 deletions
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19
spring-batch-infrastructure/src/main/java/org/springframework/batch/item/file/MultiResourceItemReader.java
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@@ -34,7 +34,7 @@ import org.springframework.util.ClassUtils;
*
* @author Robert Kasanicky
*/
public class MultiResourceItemReader extends ExecutionContextUserSupport implements ItemReader, ItemStream,
public class MultiResourceItemReader<T> extends ExecutionContextUserSupport implements ItemReader<T>, ItemStream,
InitializingBean {
/**
@@ -42,7 +42,7 @@ public class MultiResourceItemReader extends ExecutionContextUserSupport impleme
*/
private static final Object END_OF_RESOURCE_MARKER = new Object();
private ResourceAwareItemReaderItemStream delegate;
private ResourceAwareItemReaderItemStream<T> delegate;
private Resource[] resources;
@@ -74,9 +74,9 @@ public class MultiResourceItemReader extends ExecutionContextUserSupport impleme
/**
* Reads the next item, jumping to next resource if necessary.
*/
public Object read() throws Exception, UnexpectedInputException, NoWorkFoundException, ParseException {
public T read() throws Exception, UnexpectedInputException, NoWorkFoundException, ParseException {
Object item;
T item;
if (shouldReadBuffer) {
item = readBufferedItem();
}
@@ -94,9 +94,9 @@ public class MultiResourceItemReader extends ExecutionContextUserSupport impleme
* one is exhausted. Items are appended to the buffer.
* @return next item from input
*/
private Object readNextItem() throws Exception {
private T readNextItem() throws Exception {
Object item = delegate.read();
T item = delegate.read();
while (item == null) {
@@ -124,7 +124,8 @@ public class MultiResourceItemReader extends ExecutionContextUserSupport impleme
* input for possible restart.
* @return next item from buffer
*/
private Object readBufferedItem() {
@SuppressWarnings("unchecked")
private T readBufferedItem() {
Object buffered = itemBufferIterator.next();
while (buffered == END_OF_RESOURCE_MARKER) {
@@ -137,7 +138,7 @@ public class MultiResourceItemReader extends ExecutionContextUserSupport impleme
shouldReadBuffer = false;
itemBufferIterator = null;
}
return buffered;
return (T) buffered;
}
/**
@@ -228,7 +229,7 @@ public class MultiResourceItemReader extends ExecutionContextUserSupport impleme
/**
* @param delegate reads items from single {@link Resource}.
*/
public void setDelegate(ResourceAwareItemReaderItemStream delegate) {
public void setDelegate(ResourceAwareItemReaderItemStream<T> delegate) {
this.delegate = delegate;
}