com.tinkerpop.blueprints.impls.orient.OrientGraph Maven / Gradle / Ivy
/*
*
* * Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.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.
* *
* * For more information: http://www.orientechnologies.com
*
*/
package com.tinkerpop.blueprints.impls.orient;
import org.apache.commons.configuration.Configuration;
import com.orientechnologies.common.util.OPair;
import com.orientechnologies.orient.core.db.OPartitionedDatabasePool;
import com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.exception.ORecordNotFoundException;
import com.orientechnologies.orient.core.record.impl.ODocument;
import com.orientechnologies.orient.core.record.impl.ODocumentInternal;
import com.tinkerpop.blueprints.Direction;
import com.tinkerpop.blueprints.Features;
import com.tinkerpop.blueprints.util.ExceptionFactory;
/**
* A Blueprints implementation of the graph database OrientDB (http://www.orientechnologies.com)
*
* @author Luca Garulli (http://www.orientechnologies.com)
*/
public class OrientGraph extends OrientTransactionalGraph {
private boolean featuresInitialized = false;
protected final Features FEATURES = new Features();
/**
* Creates a new Transactional Graph using an existent database instance. User and password are passed in case of re-open.
*
* @param iDatabase
* Underlying database object to attach
*/
public OrientGraph(final ODatabaseDocumentTx iDatabase, final String iUserName, final String iUserPasswd) {
super(iDatabase, true, iUserName, iUserPasswd);
}
/**
* Creates a new Transactional Graph using an existent database instance and the auto-start setting to determine if auto start a
* transaction.
*
* @param iDatabase
* Underlying database object to attach
* @param iAutoStartTx
* True to auto start a transaction at the beginning and after each commit/rollback
*/
public OrientGraph(final ODatabaseDocumentTx iDatabase, final boolean iAutoStartTx) {
super(iDatabase, iAutoStartTx, null, null);
}
/**
* Creates a new Transactional Graph from an URL using default user (admin) and password (admin).
*
* @param url
* OrientDB URL
*/
public OrientGraph(final String url) {
super(url, ADMIN, ADMIN);
}
/**
* Creates a new Transactional Graph from an URL using default user (admin) and password (admin). It receives also the auto-start
* setting to determine if auto start a transaction.
*
* @param url
* OrientDB URL
* @param iAutoStartTx
* True to auto start a transaction at the beginning and after each commit/rollback
*/
public OrientGraph(final String url, final boolean iAutoStartTx) {
super(url, ADMIN, ADMIN, iAutoStartTx);
}
/**
* Creates a new Transactional Graph from an URL using a username and a password.
*
* @param url
* OrientDB URL
* @param username
* Database user name
* @param password
* Database user password
*/
public OrientGraph(final String url, final String username, final String password) {
super(url, username, password);
}
/**
*
* Creates a new Transactional Graph from an URL using a username and a password. It receives also the auto-start setting to
* determine if auto start a transaction.
*
* @param url
* OrientDB URL
* @param username
* Database user name
* @param password
* Database user password
* @param iAutoStartTx
* True to auto start a transaction at the beginning and after each commit/rollback
*/
public OrientGraph(final String url, final String username, final String password, final boolean iAutoStartTx) {
super(url, username, password, iAutoStartTx);
}
/**
* Creates a new Transactional Graph from a pool.
*
* @param pool
* Database pool where to acquire a database instance
*/
public OrientGraph(final OPartitionedDatabasePool pool) {
super(pool);
}
public OrientGraph(final OPartitionedDatabasePool pool, final Settings configuration) {
super(pool, configuration);
}
/**
* Builds a OrientGraph instance passing a configuration. Supported configuration settings are:
*
*
* Name
* Description
* Default value
*
*
* blueprints.orientdb.url
* Database URL
* -
*
*
* blueprints.orientdb.username
* User name
* admin
*
*
* blueprints.orientdb.password
* User password
* admin
*
*
* blueprints.orientdb.saveOriginalIds
* Saves the original element IDs by using the property _id. This could be useful on import of graph to preserve original ids
*
* false
*
*
* blueprints.orientdb.keepInMemoryReferences
* Avoid to keep records in memory but only RIDs
* false
*
*
* blueprints.orientdb.useCustomClassesForEdges
* Use Edge's label as OrientDB class. If doesn't exist create it under the hood
* true
*
*
* blueprints.orientdb.useCustomClassesForVertex
* Use Vertex's label as OrientDB class. If doesn't exist create it under the hood
* true
*
*
* blueprints.orientdb.useVertexFieldsForEdgeLabels
* Store the edge relationships in vertex by using the Edge's class. This allow to use multiple fields and make faster
* traversal by edge's label (class)
* true
*
*
* blueprints.orientdb.lightweightEdges
* Uses lightweight edges. This avoid to create a physical document per edge. Documents are created only when they have
* properties
* true
*
*
* blueprints.orientdb.autoStartTx
* Auto start a transaction as soon the graph is changed by adding/remote vertices and edges and properties
* true
*
*
*
* @param iConfiguration
* graph settings see the details above.
*/
public OrientGraph(final Configuration iConfiguration) {
super(iConfiguration);
}
/**
* Creates a new Transactional Graph using an existent database instance.
*
* @param iDatabase
* Underlying database object to attach
*/
public OrientGraph(final ODatabaseDocumentTx iDatabase) {
super(iDatabase);
}
/**
* Creates a new Transactional Graph using an existent database instance.
*
* @param iDatabase
* Underlying database object to attach
*/
public OrientGraph(final ODatabaseDocumentTx iDatabase, final String iUser, final String iPassword,
final Settings iConfiguration) {
super(iDatabase, iUser, iPassword, iConfiguration);
}
/**
* Returns the current Graph settings.
*
* @return Features object
*/
public Features getFeatures() {
makeActive();
if (!featuresInitialized) {
FEATURES.supportsDuplicateEdges = true;
FEATURES.supportsSelfLoops = true;
FEATURES.isPersistent = true;
FEATURES.supportsVertexIteration = true;
FEATURES.supportsVertexIndex = true;
FEATURES.ignoresSuppliedIds = true;
FEATURES.supportsTransactions = true;
FEATURES.supportsVertexKeyIndex = true;
FEATURES.supportsKeyIndices = true;
FEATURES.isWrapper = false;
FEATURES.supportsIndices = true;
FEATURES.supportsVertexProperties = true;
FEATURES.supportsEdgeProperties = true;
// For more information on supported types, please see:
// http://code.google.com/p/orient/wiki/Types
FEATURES.supportsSerializableObjectProperty = true;
FEATURES.supportsBooleanProperty = true;
FEATURES.supportsDoubleProperty = true;
FEATURES.supportsFloatProperty = true;
FEATURES.supportsIntegerProperty = true;
FEATURES.supportsPrimitiveArrayProperty = true;
FEATURES.supportsUniformListProperty = true;
FEATURES.supportsMixedListProperty = true;
FEATURES.supportsLongProperty = true;
FEATURES.supportsMapProperty = true;
FEATURES.supportsStringProperty = true;
FEATURES.supportsThreadedTransactions = false;
FEATURES.supportsThreadIsolatedTransactions = false;
// DYNAMIC FEATURES BASED ON CONFIGURATION
FEATURES.supportsEdgeIndex = !isUseLightweightEdges();
FEATURES.supportsEdgeKeyIndex = !isUseLightweightEdges();
FEATURES.supportsEdgeIteration = !isUseLightweightEdges();
FEATURES.supportsEdgeRetrieval = !isUseLightweightEdges();
featuresInitialized = true;
}
return FEATURES;
}
OrientEdge addEdgeInternal(final OrientVertex currentVertex, String label, final OrientVertex inVertex, final String iClassName,
final String iClusterName, final Object... fields) {
if (currentVertex.checkDeletedInTx())
throw new ORecordNotFoundException(currentVertex.getIdentity(),
"The vertex " + currentVertex.getIdentity() + " has been deleted");
if (inVertex.checkDeletedInTx())
throw new ORecordNotFoundException(inVertex.getIdentity(), "The vertex " + inVertex.getIdentity() + " has been deleted");
autoStartTransaction();
// TEMPORARY STATIC LOCK TO AVOID MT PROBLEMS AGAINST OMVRBTreeRID
final ODocument outDocument = currentVertex.getRecord();
if (outDocument == null)
throw new IllegalArgumentException("source vertex is invalid (rid=" + currentVertex.getIdentity() + ")");
if (!ODocumentInternal.getImmutableSchemaClass(outDocument).isVertexType())
throw new IllegalArgumentException("source record is not a vertex");
ODocument inDocument = inVertex.getRecord();
if (inDocument == null)
throw new IllegalArgumentException("destination vertex is invalid (rid=" + inVertex.getIdentity() + ")");
if (!ODocumentInternal.getImmutableSchemaClass(outDocument).isVertexType())
throw new IllegalArgumentException("destination record is not a vertex");
OIdentifiable to;
OIdentifiable from;
label = OrientBaseGraph.encodeClassName(label);
if (label == null && iClassName != null)
// RETRO-COMPATIBILITY WITH THE SYNTAX CLASS:
label = OrientBaseGraph.encodeClassName(iClassName);
if (isUseClassForEdgeLabel()) {
final OrientEdgeType edgeType = getEdgeType(label);
if (edgeType == null)
// AUTO CREATE CLASS
createEdgeType(label);
else
// OVERWRITE CLASS NAME BECAUSE ATTRIBUTES ARE CASE SENSITIVE
label = edgeType.getName();
}
final String outFieldName = currentVertex.getConnectionFieldName(Direction.OUT, label,
settings.isUseVertexFieldsForEdgeLabels());
final String inFieldName = currentVertex.getConnectionFieldName(Direction.IN, label, settings.isUseVertexFieldsForEdgeLabels());
// since the label for the edge can potentially get re-assigned
// before being pushed into the OrientEdge, the
// null check has to go here.
if (label == null)
throw ExceptionFactory.edgeLabelCanNotBeNull();
OrientEdge edge = null;
if (currentVertex.canCreateDynamicEdge(outDocument, inDocument, outFieldName, inFieldName, fields, label)) {
// CREATE A LIGHTWEIGHT DYNAMIC EDGE
from = currentVertex.rawElement;
to = inDocument;
if (edge == null) {
if (settings.isKeepInMemoryReferences())
edge = new OrientEdge(this, from.getIdentity(), to.getIdentity(), label);
else
edge = new OrientEdge(this, from, to, label);
}
} else {
if (edge == null) {
// CREATE THE EDGE DOCUMENT TO STORE FIELDS TOO
edge = new OrientEdge(this, label, fields);
if (settings.isKeepInMemoryReferences())
edge.getRecord().fields(OrientBaseGraph.CONNECTION_OUT, currentVertex.rawElement.getIdentity(),
OrientBaseGraph.CONNECTION_IN, inDocument.getIdentity());
else
edge.getRecord().fields(OrientBaseGraph.CONNECTION_OUT, currentVertex.rawElement, OrientBaseGraph.CONNECTION_IN,
inDocument);
}
from = edge.getRecord();
to = edge.getRecord();
}
if (settings.isKeepInMemoryReferences()) {
// USES REFERENCES INSTEAD OF DOCUMENTS
from = from.getIdentity();
to = to.getIdentity();
}
// OUT-VERTEX ---> IN-VERTEX/EDGE
currentVertex.createLink(this, outDocument, to, outFieldName);
// IN-VERTEX ---> OUT-VERTEX/EDGE
currentVertex.createLink(this, inDocument, from, inFieldName);
// THE DIRTY MANAGER MANAGE THE SAVE OF ALL LINKED ENTITIES.
if (!edge.isLightweight())
edge.save(iClusterName);
else
outDocument.save();
return edge;
}
/**
* Removes the Edge from the Graph. Connected vertices aren't removed.
*/
public void removeEdgeInternal(final OrientEdge edge) {
// OUT VERTEX
final OIdentifiable inVertexEdge = edge.vIn != null ? edge.vIn : edge.rawElement;
final String edgeClassName = OrientBaseGraph.encodeClassName(edge.getLabel());
final boolean useVertexFieldsForEdgeLabels = settings.isUseVertexFieldsForEdgeLabels();
final OIdentifiable outVertex = edge.getOutVertex();
ODocument outVertexRecord = null;
boolean outVertexChanged = false;
if (outVertex != null) {
outVertexRecord = outVertex.getRecord();
if (outVertexRecord != null) {
final String outFieldName = OrientVertex.getConnectionFieldName(Direction.OUT, edgeClassName, useVertexFieldsForEdgeLabels);
outVertexChanged = edge.dropEdgeFromVertex(inVertexEdge, outVertexRecord, outFieldName,
outVertexRecord.field(outFieldName));
}
}
// IN VERTEX
final OIdentifiable outVertexEdge = edge.vOut != null ? edge.vOut : edge.rawElement;
final OIdentifiable inVertex = edge.getInVertex();
ODocument inVertexRecord = null;
boolean inVertexChanged = false;
if (inVertex != null) {
inVertexRecord = inVertex.getRecord();
if (inVertexRecord != null) {
final String inFieldName = OrientVertex.getConnectionFieldName(Direction.IN, edgeClassName, useVertexFieldsForEdgeLabels);
inVertexChanged = edge.dropEdgeFromVertex(outVertexEdge, inVertexRecord, inFieldName, inVertexRecord.field(inFieldName));
}
}
if (outVertexChanged)
outVertexRecord.save();
if (inVertexChanged)
inVertexRecord.save();
if (edge.rawElement != null)
// NON-LIGHTWEIGHT EDGE
edge.removeRecord();
}
@Override
void removeEdgesInternal(OrientVertex vertex, ODocument iVertex, OIdentifiable iVertexToRemove, boolean iAlsoInverse,
boolean useVertexFieldsForEdgeLabels, boolean autoScaleEdgeType) {
for (String fieldName : iVertex.fieldNames()) {
final OPair connection = vertex.getConnection(Direction.BOTH, fieldName);
if (connection == null)
// SKIP THIS FIELD
continue;
removeEdges(this, iVertex, fieldName, iVertexToRemove, iAlsoInverse, useVertexFieldsForEdgeLabels, autoScaleEdgeType, false);
}
}
}
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