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Optimized canonicalized ItemPath format a bit. Fixed NPE in audit log…
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149 changes: 149 additions & 0 deletions
149
infra/prism/src/main/java/com/evolveum/midpoint/prism/path/CanonicalItemPath.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,149 @@ | ||
| /* | ||
| * Copyright (c) 2010-2016 Evolveum | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
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| package com.evolveum.midpoint.prism.path; | ||
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| import com.evolveum.midpoint.prism.Containerable; | ||
| import com.evolveum.midpoint.prism.ItemDefinition; | ||
| import com.evolveum.midpoint.prism.PrismContainerDefinition; | ||
| import com.evolveum.midpoint.prism.PrismContext; | ||
| import com.evolveum.midpoint.util.QNameUtil; | ||
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|
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| import javax.xml.namespace.QName; | ||
| import java.io.Serializable; | ||
| import java.util.ArrayList; | ||
| import java.util.Iterator; | ||
| import java.util.List; | ||
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|
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| /** | ||
| * @author katkav | ||
| * @author mederly | ||
| */ | ||
| public class CanonicalItemPath implements Serializable { | ||
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| private static final String SHORTCUT_MARKER = "$"; | ||
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| // currently we support only named segments in canonical paths | ||
| public static class Segment implements Serializable { | ||
| private final QName name; | ||
| private final Integer index; // N means this is Nth unique non-empty namespace in the path (starting from 0) | ||
| private final Integer shortcut; // K means this namespace is the same as the one with index=K (null if 1st occurrence) | ||
| private Segment(QName name, Integer index, Integer shortcut) { | ||
| this.name = name; | ||
| this.index = index; | ||
| this.shortcut = shortcut; | ||
| } | ||
| public QName getName() { | ||
| return name; | ||
| } | ||
| public Integer getIndex() { | ||
| return index; | ||
| } | ||
| public Integer getShortcut() { | ||
| return shortcut; | ||
| } | ||
| } | ||
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| private final List<Segment> segments = new ArrayList<>(); | ||
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| public static CanonicalItemPath create(ItemPath itemPath, Class<? extends Containerable> clazz, PrismContext prismContext) { | ||
| return new CanonicalItemPath(itemPath, clazz, prismContext); | ||
| } | ||
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| public static CanonicalItemPath create(ItemPath itemPath) { | ||
| return new CanonicalItemPath(itemPath, null, null); | ||
| } | ||
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| private CanonicalItemPath(ItemPath itemPath, Class<? extends Containerable> clazz, PrismContext prismContext) { | ||
| ItemDefinition def = clazz != null && prismContext != null ? | ||
| prismContext.getSchemaRegistry().findContainerDefinitionByCompileTimeClass(clazz) : null; | ||
| while (!ItemPath.isNullOrEmpty(itemPath)) { | ||
| ItemPathSegment first = itemPath.first(); | ||
| if (first instanceof NameItemPathSegment) { | ||
| // TODO what about variable named item path segments? | ||
| QName name = ((NameItemPathSegment) first).getName(); | ||
| if (def instanceof PrismContainerDefinition) { | ||
| def = ((PrismContainerDefinition) def).findItemDefinition(name); | ||
| if (def != null && !QNameUtil.hasNamespace(name)) { | ||
| name = def.getName(); | ||
| } | ||
| } | ||
| addToSegments(name); | ||
| } else if (first instanceof IdItemPathSegment) { | ||
| // ignored (for now) | ||
| } else { | ||
| throw new UnsupportedOperationException("Canonicalization of non-name/non-ID segments is not supported: " + first); | ||
| } | ||
| itemPath = itemPath.rest(); | ||
| } | ||
| } | ||
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| private void addToSegments(QName name) { | ||
| if (!QNameUtil.hasNamespace(name)) { | ||
| segments.add(new Segment(name, null, null)); | ||
| return; | ||
| } | ||
| String namespace = name.getNamespaceURI(); | ||
| int index = 0; | ||
| Integer shortcut = null; | ||
| for (Segment segment : segments) { | ||
| if (namespace.equals(segment.name.getNamespaceURI())) { | ||
| shortcut = index = segment.index; | ||
| break; | ||
| } | ||
| if (QNameUtil.hasNamespace(segment.name) && segment.shortcut == null) { | ||
| // we found a unique non-empty namespace! (so increase the index) | ||
| index++; | ||
| } | ||
| } | ||
| segments.add(new Segment(name, index, shortcut)); | ||
| } | ||
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| public List<Segment> getSegments() { | ||
| return segments; | ||
| } | ||
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| public int size() { | ||
| return segments.size(); | ||
| } | ||
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| public String asString(int howManySegments) { | ||
| StringBuilder sb = new StringBuilder(); | ||
| Iterator<Segment> iterator = segments.iterator(); | ||
| while (iterator.hasNext() && howManySegments > 0) { | ||
| Segment segment = iterator.next(); | ||
| howManySegments--; | ||
| sb.append("\\"); | ||
| if (segment.shortcut == null) { // always true for unqualified names | ||
| sb.append(QNameUtil.qNameToUri(segment.name)); | ||
| } else { | ||
| sb.append(SHORTCUT_MARKER).append(segment.shortcut) | ||
| .append(QNameUtil.DEFAULT_QNAME_URI_SEPARATOR_CHAR).append(segment.name.getLocalPart()); | ||
| } | ||
| } | ||
| return sb.length() == 0 ? "\\" : sb.toString(); // TODO should we really return "\\" on empty path? | ||
| } | ||
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| public String asString() { | ||
| return asString(segments.size()); | ||
| } | ||
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| @Override | ||
| public String toString() { | ||
| return asString(); | ||
| } | ||
|
|
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| } |
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