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Wrapper Child factory in callable to further delay execution. Still doesn't make Search lazy since DataResultFilterNode will gather all children and do lookups which triggers the children queries.

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This commit is contained in:
Andrew Ziehl 2018-06-07 08:56:33 -07:00
parent 71ab71410c
commit fecfc8df70
1 changed files with 22 additions and 4 deletions
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26
Core/src/org/sleuthkit/autopsy/datamodel/Md5Node.java
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@ -22,6 +22,7 @@ package org.sleuthkit.autopsy.datamodel;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
import java.util.logging.Level;
import org.openide.nodes.ChildFactory;
import org.openide.nodes.Children;
@ -53,10 +54,7 @@ public class Md5Node extends DisplayableItemNode {
private final String dataSources;
public Md5Node(Md5Metadata data) {
super(Children.create(
new FileInstanceNodeFactory(data), true),
Lookups.singleton(data.getMd5()));
super(Children.createLazy(new Md5ChildCallable(data)), Lookups.singleton(data.getMd5()));
this.commonFileCount = data.size();
this.dataSources = String.join(", ", data.getDataSources());
this.md5Hash = data.getMd5();
@ -64,6 +62,26 @@ public class Md5Node extends DisplayableItemNode {
this.setDisplayName(this.md5Hash);
}
private static class Md5ChildCallable implements Callable<Children> {
private final Md5Metadata key;
private Md5ChildCallable(Md5Metadata key) {
this.key = key;
}
@Override
public Children call() throws Exception {
//Check, somehow, that your key has children,
//e.g., create "hasChildren" on the object
//to look in the database to see whether
//the object has children;
//if it doesn't have children, return a leaf:
if (key.getMetadata().isEmpty()) {
return Children.LEAF;
} else {
return Children.create(new FileInstanceNodeFactory(key), true);
}
}
}
int getCommonFileCount() {
return this.commonFileCount;
}