DefaultIndex.java
/*
* Portions of this software was developed by employees of the National Institute
* of Standards and Technology (NIST), an agency of the Federal Government and is
* being made available as a public service. Pursuant to title 17 United States
* Code Section 105, works of NIST employees are not subject to copyright
* protection in the United States. This software may be subject to foreign
* copyright. Permission in the United States and in foreign countries, to the
* extent that NIST may hold copyright, to use, copy, modify, create derivative
* works, and distribute this software and its documentation without fee is hereby
* granted on a non-exclusive basis, provided that this notice and disclaimer
* of warranty appears in all copies.
*
* THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
* EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
* THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
* INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
* SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE. IN NO EVENT
* SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
* INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
* OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
* CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
* PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
* OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
*/
package gov.nist.secauto.metaschema.core.model.constraint;
import gov.nist.secauto.metaschema.core.metapath.item.node.INodeItem;
import gov.nist.secauto.metaschema.core.util.CollectionUtil;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import edu.umd.cs.findbugs.annotations.NonNull;
public class DefaultIndex implements IIndex {
@NonNull
private final List<IKeyField> keyFields;
@NonNull
private final Map<List<String>, INodeItem> keyToItemMap = new ConcurrentHashMap<>();
/**
* Construct a new index.
*
* @param keyFields
* the key field components to use to generate keys by default
*/
protected DefaultIndex(@NonNull List<? extends IKeyField> keyFields) {
this.keyFields = CollectionUtil.unmodifiableList(new ArrayList<>(keyFields));
}
@Override
public List<IKeyField> getKeyFields() {
return keyFields;
}
@Override
public INodeItem put(@NonNull INodeItem item, @NonNull List<String> key) {
INodeItem oldItem = null;
if (!IIndex.isAllNulls(key)) {
// only add keys with some information (values)
oldItem = keyToItemMap.put(key, item);
}
return oldItem;
}
@Override
public INodeItem get(List<String> key) {
if (getKeyFields().size() != key.size()) {
throw new IllegalArgumentException("Provided key is not the same size as the index requires.");
}
return keyToItemMap.get(key);
}
}