org.apache.tinkerpop.gremlin.server.op.standard

Class StandardOpProcessor

java.lang.Object

org.apache.tinkerpop.gremlin.server.op.AbstractOpProcessor

org.apache.tinkerpop.gremlin.server.op.AbstractEvalOpProcessor

org.apache.tinkerpop.gremlin.server.op.standard.StandardOpProcessor

All Implemented Interfaces:

AutoCloseable, OpProcessor

public class StandardOpProcessor
extends AbstractEvalOpProcessor

Simple OpProcessor implementation that handles ScriptEngine script evaluation outside the context of a session.

Author:

Stephen Mallette (http://stephen.genoprime.com)

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.tinkerpop.gremlin.server.op.AbstractEvalOpProcessor

AbstractEvalOpProcessor.BindingSupplier

Field Summary

Fields

Modifier and Type	Field and Description
protected Function<Context,AbstractEvalOpProcessor.BindingSupplier>	bindingMaker
static String	OP_PROCESSOR_NAME

Fields inherited from class org.apache.tinkerpop.gremlin.server.op.AbstractEvalOpProcessor

CONFIG_MAX_PARAMETERS, DEFAULT_MAX_PARAMETERS, evalOpTimer, INVALID_BINDINGS_KEYS, maxParameters

Fields inherited from class org.apache.tinkerpop.gremlin.server.op.AbstractOpProcessor

manageTransactions

Constructor Summary

Constructors

Constructor and Description
StandardOpProcessor()

Method Summary

Modifier and Type	Method and Description
void	close()
protected Function<Context,AbstractEvalOpProcessor.BindingSupplier>	getBindingMaker() A useful method for those extending this class, where the means for binding construction can be supplied to this class.
ThrowingConsumer<Context>	getEvalOp() Provides an operation for evaluating a Gremlin script.
String	getName() The name of the processor which requests must refer to "processor" field on a request.
void	init(Settings settings) Initialize the OpProcessor with settings from the server.
Optional<ThrowingConsumer<Context>>	selectOther(Context ctx) A sub-class may have additional "ops" that it will service.

Methods inherited from class org.apache.tinkerpop.gremlin.server.op.AbstractEvalOpProcessor

evalOpInternal, select, validateEvalMessage

Methods inherited from class org.apache.tinkerpop.gremlin.server.op.AbstractOpProcessor

attemptCommit, attemptRollback, determineIfTemporaryException, generateResultMetaData, generateStatusAttributes, handleIterator, isForceFlushed, iterateComplete, makeFrame

Methods inherited from class java.lang.Object

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

Field Detail

OP_PROCESSOR_NAME

public static final String OP_PROCESSOR_NAME

See Also:

Constant Field Values

bindingMaker

protected final Function<Context,AbstractEvalOpProcessor.BindingSupplier> bindingMaker

Constructor Detail

StandardOpProcessor

public StandardOpProcessor()

Method Detail

getName

public String getName()

Description copied from interface: OpProcessor

The name of the processor which requests must refer to "processor" field on a request.

init

public void init(Settings settings)

Description copied from interface: OpProcessor

Initialize the OpProcessor with settings from the server. This method should only be called once at server startup by a single thread.

getEvalOp

public ThrowingConsumer<Context> getEvalOp()

Description copied from class: AbstractEvalOpProcessor

Provides an operation for evaluating a Gremlin script.

Specified by:

getEvalOp in class AbstractEvalOpProcessor

Returns:

selectOther

public Optional<ThrowingConsumer<Context>> selectOther(Context ctx)
                                                throws OpProcessorException

Description copied from class: AbstractEvalOpProcessor

A sub-class may have additional "ops" that it will service. Calls to OpProcessor.select(Context) that are not handled will be passed to this method to see if the sub-class can service the requested op code.

Specified by:

selectOther in class AbstractEvalOpProcessor

Returns:

Throws:

OpProcessorException

close

public void close()
           throws Exception

Throws:

Exception

getBindingMaker

protected Function<Context,AbstractEvalOpProcessor.BindingSupplier> getBindingMaker()

A useful method for those extending this class, where the means for binding construction can be supplied to this class. This function is used in evalOp(Context) to create the final argument to AbstractEvalOpProcessor.evalOpInternal(Context, Supplier, BindingSupplier). In this way an extending class can use the default AbstractEvalOpProcessor.BindingSupplier which carries a lot of re-usable functionality or provide a new one to override the existing approach.