org.apache.tinkerpop.gremlin.process.traversal.step.util

Class Parameters

java.lang.Object

org.apache.tinkerpop.gremlin.process.traversal.step.util.Parameters

All Implemented Interfaces:

Serializable, Cloneable

public final class Parameters
extends Object
implements Cloneable, Serializable

The parameters held by a Traversal.

Author:

Marko A. Rodriguez (http://markorodriguez.com), Stephen Mallette (http://stephen.genoprime.com)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Parameters()

Method Summary

Modifier and Type	Method and Description
Parameters	clone()
boolean	contains(Object key) Checks for existence of key in parameter set.
<E> List<E>	get(Object key, Supplier<E> defaultValue) Gets the value of a key and if that key isn't present returns the default value from the Supplier.
<S,E> List<E>	get(Traverser.Admin<S> traverser, Object key, Supplier<E> defaultValue)
<S> Object[]	getKeyValues(Traverser.Admin<S> traverser, Object... exceptKeys)
Map<Object,List<Object>>	getRaw(Object... exceptKeys) Gets an immutable set of the parameters without evaluating them in the context of a Traverser as is done in getKeyValues(Traverser.Admin, Object...).
<S,E> List<Traversal.Admin<S,E>>	getTraversals()
int	hashCode()
void	integrateTraversals(TraversalParent step)
Object	remove(Object key) Remove a key from the parameter set.
void	rename(Object oldKey, Object newKey) Renames a key in the parameter set.
void	set(Object... keyValues) Set parameters given key/value pairs.
String	toString()

Methods inherited from class java.lang.Object

equals, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Parameters

public Parameters()

Method Detail

contains

public boolean contains(Object key)

Checks for existence of key in parameter set.

Parameters:

key - the key to check

Returns:

true if the key is present and false otherwise

rename

public void rename(Object oldKey,
                   Object newKey)

Renames a key in the parameter set.

Parameters:

oldKey - the key to rename

newKey - the new name of the key

get

public <S,E> List<E> get(Traverser.Admin<S> traverser,
                         Object key,
                         Supplier<E> defaultValue)

get

public <E> List<E> get(Object key,
                       Supplier<E> defaultValue)

Gets the value of a key and if that key isn't present returns the default value from the Supplier.

Parameters:

key - the key to retrieve

defaultValue - the default value generator

remove

public Object remove(Object key)

Remove a key from the parameter set.

Parameters:

key - the key to remove

Returns:

the value of the removed key

getKeyValues

public <S> Object[] getKeyValues(Traverser.Admin<S> traverser,
                                 Object... exceptKeys)

getRaw

public Map<Object,List<Object>> getRaw(Object... exceptKeys)

Gets an immutable set of the parameters without evaluating them in the context of a Traverser as is done in getKeyValues(Traverser.Admin, Object...).

Parameters:

exceptKeys - keys to not include in the returned Map

set

public void set(Object... keyValues)

Set parameters given key/value pairs.

integrateTraversals

public void integrateTraversals(TraversalParent step)

getTraversals

public <S,E> List<Traversal.Admin<S,E>> getTraversals()

clone

public Parameters clone()

Overrides:

clone in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object