/*
* Copyright 1999-2010 Luca Garulli (l.garulli--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.
*/
package com.orientechnologies.orient.core.sql;
import java.util.Map;
import com.orientechnologies.orient.core.command.OCommandRequestText;
import com.orientechnologies.orient.core.exception.OCommandExecutionException;
import com.orientechnologies.orient.core.metadata.schema.OClass;
import com.orientechnologies.orient.core.metadata.schema.OPropertyImpl;
import com.orientechnologies.orient.core.metadata.security.ODatabaseSecurityResources;
import com.orientechnologies.orient.core.metadata.security.ORole;
/**
* SQL REMOVE INDEX command: Remove an index
*
* @author Luca Garulli (l.garulli--at--orientechnologies.com)
*
*/
@SuppressWarnings("unchecked")
public class OCommandExecutorSQLDropIndex extends OCommandExecutorSQLPermissionAbstract {
public static final String KEYWORD_DROP = "DROP";
public static final String KEYWORD_INDEX = "INDEX";
private String name;
public OCommandExecutorSQLDropIndex parse(final OCommandRequestText iRequest) {
iRequest.getDatabase().checkSecurity(ODatabaseSecurityResources.COMMAND, ORole.PERMISSION_CREATE);
init(iRequest.getDatabase(), iRequest.getText());
final StringBuilder word = new StringBuilder();
int oldPos = 0;
int pos = OSQLHelper.nextWord(text, textUpperCase, oldPos, word, true);
if (pos == -1 || !word.toString().equals(KEYWORD_DROP))
throw new OCommandSQLParsingException("Keyword " + KEYWORD_DROP + " not found", text, oldPos);
oldPos = pos;
pos = OSQLHelper.nextWord(text, textUpperCase, pos, word, true);
if (pos == -1 || !word.toString().equals(KEYWORD_INDEX))
throw new OCommandSQLParsingException("Keyword " + KEYWORD_INDEX + " not found", text, oldPos);
oldPos = pos;
pos = OSQLHelper.nextWord(text, textUpperCase, oldPos, word, false);
if (pos == -1)
throw new OCommandSQLParsingException("Expected index name", text, oldPos);
name = word.toString();
return this;
}
/**
* Execute the REMOVE INDEX.
*/
public Object execute(final Map<Object, Object> iArgs) {
if (name == null)
throw new OCommandExecutionException("Can't execute the command because it hasn't been parsed yet");
if (name.indexOf('.') > -1) {
// PROPERTY INDEX
final String[] parts = name.split("\\.");
final String className = parts[0];
if (className == null)
throw new OCommandExecutionException("Class " + className + " not found");
String fieldName = parts[1];
final OClass cls = database.getMetadata().getSchema().getClass(className);
if (cls == null)
throw new OCommandExecutionException("Class '" + className + "' not found");
final OPropertyImpl prop = (OPropertyImpl) cls.getProperty(fieldName);
if (prop == null)
throw new IllegalArgumentException("Property '" + fieldName + "' was not found in class '" + cls + "'");
prop.dropIndexInternal();
} else {
database.getMetadata().getIndexManager().dropIndex(name);
}
return null;
}
}