/**
*
*/
package com.thinkbiganalytics.metadata.persistence;
/*-
* #%L
* thinkbig-metadata-persistence
* %%
* Copyright (C) 2017 ThinkBig Analytics
* %%
* 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.
* #L%
*/
import com.thinkbiganalytics.metadata.api.MetadataAccess;
import com.thinkbiganalytics.metadata.api.MetadataAction;
import com.thinkbiganalytics.metadata.api.MetadataCommand;
import com.thinkbiganalytics.metadata.api.MetadataRollbackAction;
import com.thinkbiganalytics.metadata.api.MetadataRollbackCommand;
import com.thinkbiganalytics.metadata.config.OperationalMetadataTransactionTemplateMetadataAccess;
import com.thinkbiganalytics.metadata.modeshape.JcrMetadataAccess;
import java.security.Principal;
import javax.inject.Inject;
/**
*
*/
public class AggregateMetadataAccess implements MetadataAccess {
@Inject
private OperationalMetadataTransactionTemplateMetadataAccess jpaMetadataAccess;
@Inject
private JcrMetadataAccess jcrMetadataAccess;
/* (non-Javadoc)
* @see com.thinkbiganalytics.metadata.api.MetadataAccess#commit(com.thinkbiganalytics.metadata.api.MetadataCommand, java.security.Principal[])
*/
@Override
public <R> R commit(MetadataCommand<R> cmd, Principal... principals) {
return jcrMetadataAccess.commit(wrap(cmd, false), principals);
}
/* (non-Javadoc)
* @see com.thinkbiganalytics.metadata.api.MetadataAccess#commit(com.thinkbiganalytics.metadata.api.MetadataCommand, com.thinkbiganalytics.metadata.api.MetadataRollbackCommand, java.security.Principal[])
*/
@Override
public <R> R commit(MetadataCommand<R> cmd, MetadataRollbackCommand rollbackCmd, Principal... principals) {
return jcrMetadataAccess.commit(wrap(cmd, false), rollbackCmd, principals);
}
/* (non-Javadoc)
* @see com.thinkbiganalytics.metadata.api.MetadataAccess#commit(com.thinkbiganalytics.metadata.api.MetadataAction, java.security.Principal[])
*/
@Override
public void commit(MetadataAction action, Principal... principals) {
jcrMetadataAccess.commit(wrap(action, false), principals);
}
/* (non-Javadoc)
* @see com.thinkbiganalytics.metadata.api.MetadataAccess#commit(com.thinkbiganalytics.metadata.api.MetadataAction, com.thinkbiganalytics.metadata.api.MetadataRollbackAction, java.security.Principal[])
*/
@Override
public void commit(MetadataAction action, MetadataRollbackAction rollbackAction, Principal... principals) {
jcrMetadataAccess.commit(wrap(action, false), principals);
}
/* (non-Javadoc)
* @see com.thinkbiganalytics.metadata.api.MetadataAccess#read(com.thinkbiganalytics.metadata.api.MetadataCommand, java.security.Principal[])
*/
@Override
public <R> R read(MetadataCommand<R> cmd, Principal... principals) {
return jcrMetadataAccess.read(wrap(cmd, true), principals);
}
/* (non-Javadoc)
* @see com.thinkbiganalytics.metadata.api.MetadataAccess#read(com.thinkbiganalytics.metadata.api.MetadataAction, java.security.Principal[])
*/
@Override
public void read(MetadataAction cmd, Principal... principals) {
jcrMetadataAccess.read(wrap(cmd, true), principals);
}
private MetadataAction wrap(final MetadataAction action, final boolean readOnly) {
if (JcrMetadataAccess.hasActiveSession()) {
return action;
} else {
return () -> {
if (readOnly) {
jpaMetadataAccess.read(() -> {
action.execute();
return null;
});
} else {
jpaMetadataAccess.commit(() -> {
action.execute();
return null;
});
}
};
}
}
private <R> MetadataCommand<R> wrap(final MetadataCommand<R> cmd, final boolean readOnly) {
if (JcrMetadataAccess.hasActiveSession()) {
return cmd;
} else {
return () -> {
if (readOnly) {
return jpaMetadataAccess.read(() -> cmd.execute());
} else {
return jpaMetadataAccess.commit(() -> cmd.execute());
}
};
}
}
}