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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.curator.transaction;
import java.util.HashSet;
import java.util.Set;
/**
* Records the set of changes which will happen as part of a transaction
*
* @author bratseth
*/
public class TransactionChanges {
/** The set of absolute paths created by this */
private final Set<String> createdPaths = new HashSet<>();
/** The set of absolute paths deleted by this */
private final Set<String> deletedPaths = new HashSet<>();
/** Returns whether the changes include creating this absolute path */
public boolean create(String path) {
return createdPaths.contains(path);
}
/** Returns whether the changes include creating any (proper) children of the given path */
public boolean createsChildrenOf(String parentPath) {
if ( ! parentPath.endsWith("/"))
parentPath = parentPath + "/";
for (String createdPath : createdPaths)
if (createdPath.startsWith(parentPath))
return true;
return false;
}
/** Adds creation of an absolute path to the set of changes made by this */
public void addCreate(String path) {
deletedPaths.remove(path);
createdPaths.add(path);
}
/** Returns whether the changes include deleting this absolute path */
public boolean delete(String path) {
return deletedPaths.contains(path);
}
/** Adds deletion of an absolute path to the set of changes made by this */
public void addDelete(String path) {
createdPaths.remove(path);
deletedPaths.add(path);
}
@Override
public String toString() {
return "Transaction changes: CREATES " + createdPaths + " DELETES " + deletedPaths;
}
}
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