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OPEN - issue INT-396: Update documentation on file reading

Browse Source 
http://jira.springframework.org/browse/INT-396
This commit is contained in:
Iwein Fuld
2008-10-06 19:36:16 +00:00
parent 7d8dc775e4
commit d2645224d6
4 changed files with 15 additions and 2 deletions
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3
org.springframework.integration.file/src/main/java/org/springframework/integration/file/AbstractFileListFilter.java
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@@ -20,6 +20,8 @@ import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.springframework.util.Assert;
/**
* A convenience base class for any {@link FileListFilter} whose criteria can
* be evaluated against each File in isolation. If the entire List of files is
@@ -33,6 +35,7 @@ public abstract class AbstractFileListFilter implements FileListFilter {
* Returns the list of files that are accepted by this filter.
*/
public final List<File> filterFiles(File[] files) {
Assert.notNull(files,"'files' should not be null.");
List<File> accepted = new ArrayList<File>();
for (File file : files) {
if (this.accept(file)) {

8
org.springframework.integration.file/src/main/java/org/springframework/integration/file/CompositeFileListFilter.java
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@@ -24,6 +24,8 @@ import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.springframework.util.Assert;
/**
* Composition that delegates to multiple {@link FileFilter}s. The composition
* is AND based, meaning that a file must pass through each filter's
@@ -35,7 +37,6 @@ public class CompositeFileListFilter implements FileListFilter {
private final Set<FileListFilter> fileFilters;
public CompositeFileListFilter(FileListFilter... fileFilters) {
this.fileFilters = new HashSet<FileListFilter>(Arrays.asList(fileFilters));
}
@@ -44,11 +45,14 @@ public class CompositeFileListFilter implements FileListFilter {
this.fileFilters = new HashSet<FileListFilter>(fileFilters);
}
/**
* {@inheritDoc}
*
* This implementation delegates to a collection of filters and returns only files that pass all
* the filters.
*/
public List<File> filterFiles(File[] files) {
Assert.notNull(files, "'files' should not be null");
List<File> leftOver = Arrays.asList(files);
for (FileListFilter fileFilter : fileFilters) {
leftOver = fileFilter.filterFiles(leftOver.toArray(new File[] {}));

3
org.springframework.integration.file/src/main/java/org/springframework/integration/file/FileListFilter.java
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@@ -26,6 +26,9 @@ import java.util.List;
*/
public interface FileListFilter {
/**
* Filters out files and returns the files that are left in a list.
*/
List<File> filterFiles(File[] files);
}

3
org.springframework.integration.file/src/test/java/org/springframework/integration/file/PollableFileSourceIntegrationTests-context.xml
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@@ -16,6 +16,9 @@
<list>
<bean class="org.springframework.integration.file.AcceptOnceFileListFilter" />
<bean class="org.springframework.integration.file.TestFileListFilter" />
<bean class="org.springframework.integration.file.PatternMatchingFileListFilter">
<constructor-arg value="^test.*$"/>
</bean>
</list>
</constructor-arg>
</bean>