au.com.codeka.carrot.bindings

Class IterableExpansionBindings

java.lang.Object

au.com.codeka.carrot.bindings.IterableExpansionBindings

All Implemented Interfaces:

Bindings

public final class IterableExpansionBindings
extends java.lang.Object
implements Bindings

Bindings which expand an Iterable into multiple variables (given in an Iterable as well).

Each variable is assigned to the value at the same position in the values Iterable.

Note, this doesn't enforce any constraints. In particular the values Iterable can contain more values than the variables Iterable without any error. In this case the remaining values will remain unbound. If the variables contain more elements than the values, no error is thrown unless an "unbound" variable is accessed.

This behavior is different from Python where the variables must be equal to the number of values in the expanded iterable.

Constructor Summary

Constructors

Constructor and Description
IterableExpansionBindings(java.lang.Iterable<Identifier> identifiers, java.lang.Iterable<java.lang.Object> values)

Method Summary

Modifier and Type	Method and Description
boolean	isEmpty() Returns whether these Bindings contain any values.
java.lang.Object	resolve(java.lang.String key) Returns a value for the given key or null if no such key exists in these Bindings.

Methods inherited from class java.lang.Object

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

Constructor Detail

IterableExpansionBindings

public IterableExpansionBindings(java.lang.Iterable<Identifier> identifiers,
                                 java.lang.Iterable<java.lang.Object> values)

Method Detail

resolve

@Nullable
public java.lang.Object resolve(@Nonnull
                                          java.lang.String key)

Description copied from interface: Bindings

Returns a value for the given key or null if no such key exists in these Bindings.

Specified by:

resolve in interface Bindings

Parameters:

key - The key to resolve.

Returns:

An Object or null.

isEmpty

public boolean isEmpty()

Description copied from interface: Bindings

Returns whether these Bindings contain any values.

Specified by:

isEmpty in interface Bindings

Returns:

true if these Bindings are empty, false if there is at least one value.