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SmartAssignmentCollection.java
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SmartAssignmentCollection.java
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/*
* Copyright (c) 2017 Evolveum and contributors
*
* This work is dual-licensed under the Apache License 2.0
* and European Union Public License. See LICENSE file for details.
*/
package com.evolveum.midpoint.model.impl.lens.projector;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import com.evolveum.midpoint.prism.PrismContainer;
import com.evolveum.midpoint.prism.PrismContainerValue;
import com.evolveum.midpoint.prism.PrismObject;
import com.evolveum.midpoint.prism.delta.AddDeleteReplace;
import com.evolveum.midpoint.prism.delta.ContainerDelta;
import com.evolveum.midpoint.schema.internals.InternalsConfig;
import com.evolveum.midpoint.schema.internals.TestingPaths;
import com.evolveum.midpoint.util.DebugDumpable;
import com.evolveum.midpoint.util.DebugUtil;
import com.evolveum.midpoint.util.exception.SchemaException;
import com.evolveum.midpoint.xml.ns._public.common.common_3.AssignmentHolderType;
import com.evolveum.midpoint.xml.ns._public.common.common_3.AssignmentType;
import com.evolveum.midpoint.xml.ns._public.common.common_3.FocusType;
import org.jetbrains.annotations.NotNull;
import static com.evolveum.midpoint.util.MiscUtil.emptyIfNull;
/**
* Smart set of assignment values that keep track whether the assignment is new, old or changed.
*
* This information is used for various reasons. We specifically distinguish between assignments in objectCurrent and objectOld
* to be able to reliably detect phantom adds: a phantom add is an assignment that is both in OLD and CURRENT objects. This is
* important in waves greater than 0, where objectCurrent is already updated with existing assignments. (See MID-2422.)
*
* Each assignment is present here only once. For example, if it's present in old and current object,
* and also referenced by a delta, it is still here represented only as a single entry.
*
* @author Radovan Semancik
*/
public class SmartAssignmentCollection<F extends AssignmentHolderType> implements Iterable<SmartAssignmentElement>, DebugDumpable {
private Map<SmartAssignmentKey, SmartAssignmentElement> aMap;
private Map<Long, SmartAssignmentElement> idMap;
public void collect(PrismObject<F> objectCurrent, PrismObject<F> objectOld, ContainerDelta<AssignmentType> assignmentDelta,
Collection<AssignmentType> forcedAssignments, Collection<AssignmentType> taskAssignments) throws SchemaException {
PrismContainer<AssignmentType> assignmentContainerCurrent;
if (objectCurrent != null) {
assignmentContainerCurrent = objectCurrent.findContainer(FocusType.F_ASSIGNMENT);
} else {
assignmentContainerCurrent = null;
}
if (aMap == null) {
int initialCapacity = computeInitialCapacity(assignmentContainerCurrent, assignmentDelta, forcedAssignments);
aMap = new HashMap<>(initialCapacity);
idMap = new HashMap<>(initialCapacity);
}
collectAssignments(assignmentContainerCurrent, Mode.CURRENT);
collectVirtualAssignments(forcedAssignments);
for (AssignmentType taskAssignment : taskAssignments) {
//noinspection unchecked
collectAssignment(taskAssignment.asPrismContainerValue(), Mode.CURRENT, true, null);
}
if (objectOld != null) {
collectAssignments(objectOld.findContainer(FocusType.F_ASSIGNMENT), Mode.OLD);
}
collectAssignments(assignmentDelta);
}
private void collectAssignments(PrismContainer<AssignmentType> assignmentContainer, Mode mode) throws SchemaException {
if (assignmentContainer != null) {
for (PrismContainerValue<AssignmentType> assignmentCVal : assignmentContainer.getValues()) {
collectAssignment(assignmentCVal, mode, false, null);
}
}
}
private void collectVirtualAssignments(Collection<AssignmentType> forcedAssignments) throws SchemaException {
for (AssignmentType assignment : emptyIfNull(forcedAssignments)) {
//noinspection unchecked
collectAssignment(assignment.asPrismContainerValue(), Mode.CURRENT, true, null);
}
}
private void collectAssignments(ContainerDelta<AssignmentType> assignmentDelta) throws SchemaException {
if (assignmentDelta != null) {
collectAssignmentsFromDeltaSet(assignmentDelta.getValuesToAdd(), AddDeleteReplace.ADD);
collectAssignmentsFromDeltaSet(assignmentDelta.getValuesToDelete(), AddDeleteReplace.DELETE);
collectAssignmentsFromDeltaSet(assignmentDelta.getValuesToReplace(), AddDeleteReplace.REPLACE);
}
}
private void collectAssignmentsFromDeltaSet(Collection<PrismContainerValue<AssignmentType>> assignments,
AddDeleteReplace deltaSet) throws SchemaException {
for (PrismContainerValue<AssignmentType> assignmentCVal: emptyIfNull(assignments)) {
collectAssignment(assignmentCVal, Mode.CHANGED, false, deltaSet);
}
}
private void collectAssignment(PrismContainerValue<AssignmentType> assignmentCVal, Mode mode, boolean virtual,
AddDeleteReplace deltaSet) throws SchemaException {
@NotNull SmartAssignmentElement element;
if (assignmentCVal.isEmpty()) {
// Special lookup for empty elements.
// Changed assignments may be "light", i.e. they may contain just the identifier.
// Make sure that we always have the full assignment data.
if (assignmentCVal.getId() != null) {
element = idMap.get(assignmentCVal.getId());
if (element == null) {
// deleting non-existing assignment. Safe to ignore?
return;
}
} else {
throw new SchemaException("Attempt to change empty assignment without ID");
}
} else {
SmartAssignmentElement existingElement = lookup(assignmentCVal);
if (existingElement != null) {
element = existingElement;
} else {
element = put(assignmentCVal, virtual);
}
}
element.updateFlags(mode, deltaSet);
}
private SmartAssignmentElement put(PrismContainerValue<AssignmentType> assignmentCVal, boolean virtual) {
SmartAssignmentElement element = new SmartAssignmentElement(assignmentCVal, virtual);
aMap.put(element.getKey(), element);
if (assignmentCVal.getId() != null) {
idMap.put(assignmentCVal.getId(), element);
}
return element;
}
private SmartAssignmentElement lookup(PrismContainerValue<AssignmentType> assignmentCVal) {
if (assignmentCVal.getId() != null) {
// A shortcut. But also important for deltas that specify correct id, but the value
// does not match exactly (e.g. small differences in relation, e.g. null vs default)
return idMap.get(assignmentCVal.getId());
} else {
return aMap.get(new SmartAssignmentKey(assignmentCVal));
}
}
private int computeInitialCapacity(PrismContainer<AssignmentType> assignmentContainerCurrent,
ContainerDelta<AssignmentType> assignmentDelta, Collection<AssignmentType> forcedAssignments) {
return (assignmentContainerCurrent != null ? assignmentContainerCurrent.size() : 0)
+ (assignmentDelta != null ? assignmentDelta.size() : 0)
+ (forcedAssignments != null ? forcedAssignments.size() : 0);
}
@NotNull
@Override
public Iterator<SmartAssignmentElement> iterator() {
if (InternalsConfig.getTestingPaths() == TestingPaths.REVERSED) {
Collection<SmartAssignmentElement> values = aMap.values();
List<SmartAssignmentElement> valuesList = new ArrayList<>(values.size());
valuesList.addAll(values);
Collections.reverse(valuesList);
return valuesList.iterator();
} else {
return aMap.values().iterator();
}
}
@Override
public String debugDump(int indent) {
StringBuilder sb = new StringBuilder();
DebugUtil.indentDebugDump(sb, indent);
sb.append("SmartAssignmentCollection: ");
if (aMap == null) {
sb.append("uninitialized");
} else {
sb.append(aMap.size()).append(" items");
for (SmartAssignmentElement element: aMap.values()) {
sb.append("\n");
sb.append(element.debugDump(indent + 1));
}
}
return sb.toString();
}
@Override
public String toString() {
return "SmartAssignmentCollection(" + aMap.values() + ")";
}
enum Mode {
CURRENT, OLD, CHANGED
}
}