org.protelis.lang.interpreter.impl

Class AlignedMap

java.lang.Object

org.protelis.lang.interpreter.impl.AbstractProtelisAST<Tuple>

org.protelis.lang.interpreter.impl.AlignedMap

All Implemented Interfaces:

java.io.Serializable, ProtelisAST<Tuple>, WithBytecode

public final class AlignedMap
extends AbstractProtelisAST<Tuple>

Operation evaluating a collection of expressions associated with keys, such as a set of publish-subscribe streams. This allows devices with different sets of keys to align the expressions that share keys together.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AlignedMap(HashingFunnel hasher, Metadata metadata, ProtelisAST<Field<?>> argument, ProtelisAST<FunctionDefinition> filter, ProtelisAST<FunctionDefinition> operation, ProtelisAST<?> defaultValue)

Method Summary

Modifier and Type	Method and Description
Tuple	evaluate(ExecutionContext context) Evaluates this AST node.
Bytecode	getBytecode()
java.lang.String	getName()
java.lang.String	toString()

Methods inherited from class org.protelis.lang.interpreter.impl.AbstractProtelisAST

branchesToString, branchesToString, eval, forEach, forEachWithIndex, getBranch, getBranches, getBranchesNumber, getMetadata, isNullable, stringFor

Methods inherited from class java.lang.Object

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

Constructor Detail

AlignedMap

public AlignedMap(HashingFunnel hasher,
                  Metadata metadata,
                  ProtelisAST<Field<?>> argument,
                  ProtelisAST<FunctionDefinition> filter,
                  ProtelisAST<FunctionDefinition> operation,
                  ProtelisAST<?> defaultValue)

Parameters:

hasher - a function producing a valid, reproducible, and unambiguous hash for arbitrary objects

metadata - A Metadata object containing information about the code that generated this AST node.

argument - the field on which AlignedMap should be applied

filter - filtering function

operation - function to run

defaultValue - default value

Method Detail

evaluate

public Tuple evaluate(ExecutionContext context)

Description copied from class: AbstractProtelisAST

Evaluates this AST node. This method can throw any exception, AbstractProtelisAST takes care of storing the necessary metadata.

Specified by:

evaluate in class AbstractProtelisAST<Tuple>

Parameters:

context - the execution context

Returns:

the result of the evaluation

getBytecode

public Bytecode getBytecode()

Returns:

the element Bytecode

getName

public java.lang.String getName()

Description copied from class: AbstractProtelisAST

Specified by:

getName in interface ProtelisAST<Tuple>

Overrides:

getName in class AbstractProtelisAST<Tuple>

Returns:

The name of the operation

toString

public java.lang.String toString()

Description copied from class: AbstractProtelisAST

Overrides:

toString in class AbstractProtelisAST<Tuple>