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/*
*
* * Copyright 2010-2016 OrientDB LTD (http://orientdb.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://orientdb.com
*
*/
package com.orientechnologies.orient.core.sql;
import com.orientechnologies.common.log.OLogManager;
import com.orientechnologies.common.util.OPair;
import com.orientechnologies.orient.core.command.OCommandDistributedReplicateRequest;
import com.orientechnologies.orient.core.command.OCommandRequest;
import com.orientechnologies.orient.core.command.OCommandRequestText;
import com.orientechnologies.orient.core.db.ODatabaseDocumentInternal;
import com.orientechnologies.orient.core.db.document.ODatabaseDocument;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.exception.OCommandExecutionException;
import com.orientechnologies.orient.core.metadata.OMetadataInternal;
import com.orientechnologies.orient.core.metadata.schema.OClass;
import com.orientechnologies.orient.core.metadata.schema.OSchema;
import com.orientechnologies.orient.core.record.OEdge;
import com.orientechnologies.orient.core.record.OElement;
import com.orientechnologies.orient.core.record.OVertex;
import com.orientechnologies.orient.core.sql.filter.OSQLFilterItem;
import com.orientechnologies.orient.core.sql.functions.OSQLFunctionRuntime;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
/**
* SQL CREATE EDGE command.
*
* @author Luca Garulli (l.garulli--(at)--orientdb.com)
*/
public class OCommandExecutorSQLCreateEdge extends OCommandExecutorSQLSetAware
implements OCommandDistributedReplicateRequest {
public static final String NAME = "CREATE EDGE";
private static final String KEYWORD_BATCH = "BATCH";
private String from;
private String to;
private OClass clazz;
private String edgeLabel;
private String clusterName;
private List> fields;
private int batch = 100;
@SuppressWarnings("unchecked")
public OCommandExecutorSQLCreateEdge parse(final OCommandRequest iRequest) {
final OCommandRequestText textRequest = (OCommandRequestText) iRequest;
String queryText = textRequest.getText();
String originalQuery = queryText;
try {
queryText = preParse(queryText, iRequest);
textRequest.setText(queryText);
final ODatabaseDocument database = getDatabase();
init((OCommandRequestText) iRequest);
parserRequiredKeyword("CREATE");
parserRequiredKeyword("EDGE");
String className = null;
String tempLower = parseOptionalWord(false);
String temp = tempLower == null ? null : tempLower.toUpperCase(Locale.ENGLISH);
while (temp != null) {
if (temp.equals("CLUSTER")) {
clusterName = parserRequiredWord(false);
} else if (temp.equals(KEYWORD_FROM)) {
from = parserRequiredWord(false, "Syntax error", " =><,\r\n");
} else if (temp.equals("TO")) {
to = parserRequiredWord(false, "Syntax error", " =><,\r\n");
} else if (temp.equals(KEYWORD_SET)) {
fields = new ArrayList>();
parseSetFields(clazz, fields);
} else if (temp.equals(KEYWORD_CONTENT)) {
parseContent();
} else if (temp.equals(KEYWORD_BATCH)) {
temp = parserNextWord(true);
if (temp != null) batch = Integer.parseInt(temp);
} else if (className == null && temp.length() > 0) {
className = tempLower;
clazz =
((OMetadataInternal) database.getMetadata())
.getImmutableSchemaSnapshot()
.getClass(temp);
if (clazz == null) {
final int committed;
if (database.getTransaction().isActive()) {
OLogManager.instance()
.warn(
this,
"Requested command '"
+ this.toString()
+ "' must be executed outside active transaction: the transaction will be committed and reopen right after it. To avoid this behavior execute it outside a transaction");
committed = database.getTransaction().amountOfNestedTxs();
database.commit(true);
} else committed = 0;
try {
OSchema schema = database.getMetadata().getSchema();
OClass e = schema.getClass("E");
clazz = schema.createClass(className, e);
} finally {
// RESTART TRANSACTION
for (int i = 0; i < committed; ++i) database.begin();
}
}
}
temp = parseOptionalWord(true);
if (parserIsEnded()) break;
}
if (className == null) {
// ASSIGN DEFAULT CLASS
className = "E";
clazz =
((OMetadataInternal) database.getMetadata())
.getImmutableSchemaSnapshot()
.getClass(className);
}
// GET/CHECK CLASS NAME
if (clazz == null)
throw new OCommandSQLParsingException("Class '" + className + "' was not found");
edgeLabel = className;
} finally {
textRequest.setText(originalQuery);
}
return this;
}
/** Execute the command and return the ODocument object created. */
public Object execute(final Map iArgs) {
if (clazz == null)
throw new OCommandExecutionException(
"Cannot execute the command because it has not been parsed yet");
ODatabaseDocumentInternal db = getDatabase();
final List
