/*! ******************************************************************************
*
* Pentaho Data Integration
*
* Copyright (C) 2002-2013 by Pentaho : http://www.pentaho.com
*
*******************************************************************************
*
* 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.
*
******************************************************************************/
package org.pentaho.di.starmodeler.metastore;
import java.util.ArrayList;
import java.util.List;
import org.pentaho.di.i18n.LanguageChoice;
import org.pentaho.di.repository.StringObjectId;
import org.pentaho.di.starmodeler.StarDomain;
import org.pentaho.metastore.api.IMetaStore;
import org.pentaho.metastore.api.IMetaStoreElement;
import org.pentaho.metastore.api.IMetaStoreElementType;
import org.pentaho.metastore.api.exceptions.MetaStoreElementTypeExistsException;
import org.pentaho.metastore.api.exceptions.MetaStoreException;
import org.pentaho.metastore.stores.delegate.DelegatingMetaStore;
import org.pentaho.metastore.util.MetaStoreUtil;
import org.pentaho.metastore.util.PentahoDefaults;
public class StarDomainMetaStoreUtil extends MetaStoreUtil {
public static final String METASTORE_STAR_DOMAIN_TYPE_NAME = "Star domain";
public static final String METASTORE_STAR_DOMAIN_TYPE_DESCRIPTION = "This contains a star domain, a collection of star models and shared dimensions";
protected static String namespace = PentahoDefaults.NAMESPACE;
public enum Attribute {
ID_STAR_DOMAIN_DESCRIPTION("description"),
;
public String id;
private Attribute(String id) {
this.id = id;
}
}
protected static String defaultLocale = LanguageChoice.getInstance().getDefaultLocale().toString();
public static IMetaStoreElementType getStarDomainElementType(IMetaStore metaStore) throws MetaStoreException {
verifyNamespaceCreated(metaStore, namespace);
IMetaStoreElementType elementType = metaStore.getElementTypeByName(namespace, METASTORE_STAR_DOMAIN_TYPE_NAME);
if (elementType==null) {
// create the type
//
elementType = createStarDomainElementType(metaStore);
}
return elementType;
}
public static IMetaStoreElementType createStarDomainElementType(IMetaStore metaStore) throws MetaStoreElementTypeExistsException, MetaStoreException {
IMetaStoreElementType elementType = metaStore.newElementType(namespace);
elementType.setName(METASTORE_STAR_DOMAIN_TYPE_NAME);
elementType.setDescription(METASTORE_STAR_DOMAIN_TYPE_DESCRIPTION);
metaStore.createElementType(namespace, elementType);
return elementType;
}
public static void saveStarDomain(IMetaStore metaStore, StarDomain starDomain) throws MetaStoreException {
IMetaStoreElementType elementType = getStarDomainElementType(metaStore);
IMetaStoreElement element = null;
if (starDomain.getObjectId()!=null) {
// verify the ID!
//
element = metaStore.getElement(namespace, elementType, starDomain.getObjectId().toString());
}
if (element==null) {
// Create a new element
//
element = metaStore.newElement();
populateElementWithStarDomain(metaStore, starDomain, element, elementType);
metaStore.createElement(namespace, elementType, element);
} else {
// Update an existing element
//
populateElementWithStarDomain(metaStore, starDomain, element, elementType);
metaStore.updateElement(namespace, elementType, starDomain.getObjectId().toString(), element);
}
starDomain.setObjectId(new StringObjectId(element.getId().toString()));
}
private static void populateElementWithStarDomain(IMetaStore metaStore, StarDomain starDomain, IMetaStoreElement element, IMetaStoreElementType elementType) throws MetaStoreException {
element.setElementType(elementType);
element.setName(starDomain.getName());
element.addChild(metaStore.newAttribute(Attribute.ID_STAR_DOMAIN_DESCRIPTION.id, starDomain.getDescription()));
}
public static List<IdNameDescription> getStarDomainList(IMetaStore metaStore) throws MetaStoreException {
IMetaStoreElementType elementType = getStarDomainElementType(metaStore);
List<IdNameDescription> list = new ArrayList<IdNameDescription>();
for (IMetaStoreElement element : metaStore.getElements(namespace, elementType)) {
IdNameDescription nameDescription = new IdNameDescription(element.getId(), element.getName(), getChildString(element, Attribute.ID_STAR_DOMAIN_DESCRIPTION.id));
list.add(nameDescription);
}
return list;
}
public static StarDomain loadStarDomain(DelegatingMetaStore metaStore, String id) throws MetaStoreException {
IMetaStoreElementType elementType = getStarDomainElementType(metaStore);
IMetaStoreElement element = metaStore.getElement(namespace, elementType, id);
if (element==null) {
return null;
}
StarDomain starDomain = new StarDomain();
starDomain.setObjectId(new StringObjectId(id));
starDomain.setName(element.getName());
starDomain.setDescription(getChildString(element, Attribute.ID_STAR_DOMAIN_DESCRIPTION.id));
return starDomain;
}
}