com.orientechnologies.orient.graph.sql

Class OCommandExecutorSQLDeleteVertex

java.lang.Object

com.orientechnologies.common.parser.OBaseParser

com.orientechnologies.orient.core.command.OCommandExecutorAbstract

com.orientechnologies.orient.core.sql.OCommandExecutorSQLAbstract

com.orientechnologies.orient.graph.sql.OCommandExecutorSQLDeleteVertex

All Implemented Interfaces:

OCommandDistributedReplicateRequest, OCommandExecutor, OCommandResultListener

public class OCommandExecutorSQLDeleteVertex
extends OCommandExecutorSQLAbstract
implements OCommandDistributedReplicateRequest, OCommandResultListener

SQL DELETE VERTEX command.

Author:

Luca Garulli

Nested Class Summary

Nested classes/interfaces inherited from interface com.orientechnologies.orient.core.command.OCommandDistributedReplicateRequest

OCommandDistributedReplicateRequest.DISTRIBUTED_EXECUTION_MODE, OCommandDistributedReplicateRequest.DISTRIBUTED_RESULT_MGMT, OCommandDistributedReplicateRequest.QUORUM_TYPE

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME

Fields inherited from class com.orientechnologies.orient.core.sql.OCommandExecutorSQLAbstract

CLASS_PREFIX, CLUSTER_PREFIX, DEFAULT_PARAM_USER, DICTIONARY_PREFIX, INDEX_PREFIX, INDEX_VALUES_ASC_PREFIX, INDEX_VALUES_DESC_PREFIX, INDEX_VALUES_PREFIX, KEYWORD_FROM, KEYWORD_KEY, KEYWORD_LET, KEYWORD_LIMIT, KEYWORD_LOCK, KEYWORD_OFFSET, KEYWORD_RETURN, KEYWORD_RID, KEYWORD_SKIP, KEYWORD_TIMEOUT, KEYWORD_UNSAFE, KEYWORD_WHERE, METADATA_INDEXMGR, METADATA_PREFIX, METADATA_SCHEMA, preParsedStatement, timeoutMs, timeoutStrategy

Fields inherited from class com.orientechnologies.orient.core.command.OCommandExecutorAbstract

context, limit, parameters, progressListener

Fields inherited from class com.orientechnologies.common.parser.OBaseParser

parserText, parserTextUpperCase

Constructor Summary

Constructors

Constructor and Description
OCommandExecutorSQLDeleteVertex()

Method Summary

Modifier and Type	Method and Description
void	end() Called at the end of processing.
Object	execute(Map<Object,Object> iArgs) Execute the command and return the ODocument object created.
OCommandDistributedReplicateRequest.DISTRIBUTED_EXECUTION_MODE	getDistributedExecutionMode() The command is replicated
OCommandDistributedReplicateRequest.DISTRIBUTED_RESULT_MGMT	getDistributedResultManagement() Returns how to manage the distributed result between: CHECK_FOR_EQUALS: all results must be the same MERGE: merges results.
long	getDistributedTimeout() Returns the distributed timeout in milliseconds.
Set<String>	getInvolvedClusters() Returns the involved clusters.
OCommandDistributedReplicateRequest.QUORUM_TYPE	getQuorumType() Returns the quorum type for the command: NONE: no quorum READ: configured Read quorum WRITE: configured Write quorum ALL: all nodes
Object	getResult()
int	getSecurityOperationType() Returns the security operation type use to check about security.
String	getSyntax()
OCommandExecutorSQLDeleteVertex	parse(OCommandRequest iRequest) Parse the request.
protected String	parseReturn() Parses the returning keyword if found.
boolean	result(Object iRecord) Delete the current vertex.
<RET extends OCommandExecutor> RET	setLimit(int iLimit) setLimit() for DELETE VERTEX is ignored.

Methods inherited from class com.orientechnologies.orient.core.sql.OCommandExecutorSQLAbstract

bindDefaultContextVariables, checkClusterAccess, decodeClassName, getInvolvedClustersOfClasses, getInvolvedClustersOfClusters, getInvolvedClustersOfIndex, isIdempotent, parseLock, parseTimeout, preParse, throwParsingException, throwParsingException, throwSyntaxErrorException

Methods inherited from class com.orientechnologies.orient.core.command.OCommandExecutorAbstract

checkInterruption, checkInterruption, getContext, getDatabase, getFetchPlan, getLimit, getParameters, getProgressListener, getUndoCommand, init, involveSchema, isCacheable, isDistributedExecutingOnLocalNodeFirst, isLocalExecution, mergeResults, setContext, setProgressListener, toString, upperCase

Methods inherited from class com.orientechnologies.common.parser.OBaseParser

getLastWordLength, getWordStatic, nextWord, nextWord, parseOptionalWord, parserGetCurrentChar, parserGetCurrentPosition, parserGetLastSeparator, parserGetLastWord, parserGetPreviousPosition, parserGoBack, parserIsEnded, parserMoveCurrentPosition, parserNextChars, parserNextWord, parserNextWord, parserNextWord, parserOptionalKeyword, parserOptionalWord, parserRequiredKeyword, parserRequiredWord, parserRequiredWord, parserRequiredWord, parserRequiredWord, parserSetCurrentPosition, parserSetEndOfText, parserSetLastSeparator, parserSkipWhiteSpaces

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.orientechnologies.orient.core.command.OCommandDistributedReplicateRequest

getUndoCommand, isDistributedExecutingOnLocalNodeFirst

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

OCommandExecutorSQLDeleteVertex

public OCommandExecutorSQLDeleteVertex()

Method Detail

parse

public OCommandExecutorSQLDeleteVertex parse(OCommandRequest iRequest)

Description copied from interface: OCommandExecutor

Parse the request. Once parsed the command can be executed multiple times by using the execute() method.

Specified by:

parse in interface OCommandExecutor

Parameters:

iRequest - Command request implementation.

Returns:

See Also:

#execute(Map...)

execute

public Object execute(Map<Object,Object> iArgs)

Execute the command and return the ODocument object created.

Specified by:

execute in interface OCommandExecutor

Parameters:

iArgs - Optional variable arguments to pass to the command.

Returns:

See Also:

OCommandExecutor.parse(OCommandRequest)

result

public boolean result(Object iRecord)

Delete the current vertex.

Specified by:

result in interface OCommandResultListener

Parameters:

iRecord - Current record

Returns:

True to continue the query, otherwise false

getDistributedTimeout

public long getDistributedTimeout()

Description copied from interface: OCommandDistributedReplicateRequest

Returns the distributed timeout in milliseconds.

Specified by:

getDistributedTimeout in interface OCommandDistributedReplicateRequest

Specified by:

getDistributedTimeout in interface OCommandExecutor

Overrides:

getDistributedTimeout in class OCommandExecutorAbstract

getSyntax

public String getSyntax()

Specified by:

getSyntax in interface OCommandExecutor

Overrides:

getSyntax in class OBaseParser

end

public void end()

Description copied from interface: OCommandResultListener

Called at the end of processing. This is useful to clean-up local attributes.

Specified by:

end in interface OCommandResultListener

getSecurityOperationType

public int getSecurityOperationType()

Description copied from interface: OCommandExecutor

Returns the security operation type use to check about security.

Specified by:

getSecurityOperationType in interface OCommandExecutor

Overrides:

getSecurityOperationType in class OCommandExecutorAbstract

Returns:

See Also:

PERMISSION_*

parseReturn

protected String parseReturn()
                      throws OCommandSQLParsingException

Parses the returning keyword if found.

Throws:

OCommandSQLParsingException

getQuorumType

public OCommandDistributedReplicateRequest.QUORUM_TYPE getQuorumType()

Description copied from interface: OCommandDistributedReplicateRequest

Returns the quorum type for the command:

• NONE: no quorum
• READ: configured Read quorum
• WRITE: configured Write quorum
• ALL: all nodes

Specified by:

getQuorumType in interface OCommandDistributedReplicateRequest

getDistributedResultManagement

public OCommandDistributedReplicateRequest.DISTRIBUTED_RESULT_MGMT getDistributedResultManagement()

Description copied from interface: OCommandDistributedReplicateRequest

Returns how to manage the distributed result between:

• CHECK_FOR_EQUALS: all results must be the same
• MERGE: merges results. This is typically used on sharding

Specified by:

getDistributedResultManagement in interface OCommandDistributedReplicateRequest

Overrides:

getDistributedResultManagement in class OCommandExecutorAbstract

getInvolvedClusters

public Set<String> getInvolvedClusters()

Description copied from interface: OCommandExecutor

Returns the involved clusters.

Specified by:

getInvolvedClusters in interface OCommandExecutor

Overrides:

getInvolvedClusters in class OCommandExecutorAbstract

getResult

public Object getResult()

Specified by:

getResult in interface OCommandResultListener

getDistributedExecutionMode

public OCommandDistributedReplicateRequest.DISTRIBUTED_EXECUTION_MODE getDistributedExecutionMode()

Description copied from class: OCommandExecutorSQLAbstract

The command is replicated

Specified by:

getDistributedExecutionMode in interface OCommandDistributedReplicateRequest

Overrides:

getDistributedExecutionMode in class OCommandExecutorSQLAbstract

setLimit

public <RET extends OCommandExecutor> RET setLimit(int iLimit)

setLimit() for DELETE VERTEX is ignored. Please use LIMIT keyword in the SQL statement

Specified by:

setLimit in interface OCommandExecutor

Overrides:

setLimit in class OCommandExecutorAbstract