com.googlecode.sarasvati.impl
Class NestedReadEnv

java.lang.Object
  com.googlecode.sarasvati.impl.NestedReadEnv

All Implemented Interfaces:

ReadEnv

public class NestedReadEnv
extends Object
implements ReadEnv

Constructor Summary

NestedReadEnv(ReadEnv outerEnv, ReadEnv innerEnv)

Method Summary

String	getAttribute(String name) Gets an attribute as a String.
<T> T	getAttribute(String name, Class<T> type) Returns the given attribute, transformed into the given type.
<T> T	getAttribute(String name, Class<T> type, T defaultValue) Returns the given attribute, transformed into the given type.
Iterable<String>	getAttributeNames() Returns an Iterable of attribute names.
boolean	hasAttribute(String name) Checks if the given attribute is present.

Methods inherited from class java.lang.Object

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

Constructor Detail

NestedReadEnv

public NestedReadEnv(ReadEnv outerEnv,
                     ReadEnv innerEnv)

Method Detail

getAttributeNames

public Iterable<String> getAttributeNames()

Description copied from interface: ReadEnv

Returns an Iterable of attribute names.

Specified by:

getAttributeNames in interface ReadEnv

Returns:

Iterable of attribute names

getAttribute

public String getAttribute(String name)

Description copied from interface: ReadEnv

Gets an attribute as a String. If there is no value set for the attribute, null will be returned.

Specified by:

getAttribute in interface ReadEnv

Parameters:

name - The name of the attribute to get

Returns:

The value of attribute or null if no value is set for the attribute.

getAttribute

public <T> T getAttribute(String name,
                          Class<T> type)

Description copied from interface: ReadEnv

Returns the given attribute, transformed into the given type.

Specified by:

getAttribute in interface ReadEnv

Type Parameters:

T - The type which the attribute should be returned as.

Parameters:

name - The name of the attribute to get.

type - The class type which the attribute should be transformed to.

Returns:

The attribute value, or null if no value is set for the attribute.

getAttribute

public <T> T getAttribute(String name,
                          Class<T> type,
                          T defaultValue)

Description copied from interface: ReadEnv

Returns the given attribute, transformed into the given type. If no value is set, return the given default.

Specified by:

getAttribute in interface ReadEnv

Type Parameters:

T - The type which the attribute should be returned as.

Parameters:

name - The name of the attribute to get.

type - The class type which the attribute should be transformed to.

defaultValue - The value to return if no value is set.

Returns:

The attribute value, or null if no value is set for the attribute.

hasAttribute

public boolean hasAttribute(String name)

Description copied from interface: ReadEnv

Checks if the given attribute is present.

Specified by:

hasAttribute in interface ReadEnv

Parameters:

name - Name of the attribute to check for

Returns:

True if the given attribute is present, false otherwise.