consciouscode.seedling.config.properties
Class PropertiesConfigEvaluator

java.lang.Object
  consciouscode.seedling.config.properties.PropertiesConfigEvaluator

All Implemented Interfaces:

ConfigEvaluator

public class PropertiesConfigEvaluator
extends Object
implements ConfigEvaluator

Evaluates the content of .properties configuration files.

The given ConfigEvaluatorContext has a precondition that the result of ConfigEvaluatorContext.getConfigResource() returns a PropertiesConfigResource.

Field Summary

static String	DOT_CHILDREN_PROP
static String	DOT_THIS_PROP
static char	DOUBLE_QUOTE_CHAR
static String	DOUBLE_QUOTE_STRING
protected boolean	isTransitional Indicates if this evaluator allows backwards-compatible expressions.

Fields inherited from interface consciouscode.seedling.config.ConfigEvaluator

NO_VALUE

Constructor Summary

PropertiesConfigEvaluator()

PropertiesConfigEvaluator(ClassLoader nodeClassLoader)

Method Summary

Object	constructNode(ConstructionContext context) Creates a new node, ready for injection and decoration.
static String	describeToken(StreamTokenizer tokenizer)
EvaluationResult	evalNextExpression(consciouscode.seedling.config.properties.EvaluationContext context, consciouscode.seedling.config.properties.Tokenizer tokenizer)
Object	evaluateProperty(PropertyEvaluationContext context, String property, Class<?> propertyType) Evaluates the configuration of a property.
ConfigResource	getInnerConfig(ConfigResource config, Iterable<String> pathParts)
boolean	isTransitional()
void	setTransitional(boolean transitional)

Methods inherited from class java.lang.Object

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

Field Detail

DOT_THIS_PROP

public static final String DOT_THIS_PROP

See Also:

Constant Field Values

DOT_CHILDREN_PROP

public static final String DOT_CHILDREN_PROP

See Also:

Constant Field Values

DOUBLE_QUOTE_CHAR

public static final char DOUBLE_QUOTE_CHAR

See Also:

Constant Field Values

DOUBLE_QUOTE_STRING

public static final String DOUBLE_QUOTE_STRING

See Also:

Constant Field Values

isTransitional

protected boolean isTransitional

Indicates if this evaluator allows backwards-compatible expressions.

Constructor Detail

PropertiesConfigEvaluator

public PropertiesConfigEvaluator()

PropertiesConfigEvaluator

public PropertiesConfigEvaluator(ClassLoader nodeClassLoader)

Method Detail

isTransitional

public boolean isTransitional()

setTransitional

public void setTransitional(boolean transitional)

getInnerConfig

public ConfigResource getInnerConfig(ConfigResource config,
                                     Iterable<String> pathParts)
                              throws ConfigurationException

Specified by:

getInnerConfig in interface ConfigEvaluator

Throws:

ConfigurationException

constructNode

public Object constructNode(ConstructionContext context)
                     throws NodeProvisioningException

Description copied from interface: ConfigEvaluator

Creates a new node, ready for injection and decoration.

If the evaluator cannot construct the new node, implementations may delegate to super-configuration resources via ConstructionContext.superConstructNode(). If it does so, this method should not return null, since that causes the framework to do the delegation again.

To provision an alias, this method should return a NodeReference to the target node.

Specified by:

constructNode in interface ConfigEvaluator

Returns:

the result of the creation configuration, or null if there's no creation configured in this layer, or ConfigEvaluator.NO_VALUE if creation is explicitly disabled.

Throws:

NodeProvisioningException

evaluateProperty

public Object evaluateProperty(PropertyEvaluationContext context,
                               String property,
                               Class<?> propertyType)
                        throws PropertyEvaluationException

Description copied from interface: ConfigEvaluator

Evaluates the configuration of a property. The configuration resource is provided by the context. If the evaluator and/or the resource cannot provide a definitive value for the property, implementations must generally delegate to prior configuration resources via PropertyEvaluationContext.superEvaluateProperty(java.lang.String, java.lang.Class).

Specified by:

evaluateProperty in interface ConfigEvaluator

Returns:

ConfigEvaluator.NO_VALUE if there's no result.

Throws:

PropertyEvaluationException - if anything goes wrong while evaluating the property.

evalNextExpression

public EvaluationResult evalNextExpression(consciouscode.seedling.config.properties.EvaluationContext context,
                                           consciouscode.seedling.config.properties.Tokenizer tokenizer)
                                    throws SyntaxException,
                                           EvaluationException

Returns:

null if the expression has no value. For example, 'super' with no inherited configuration.

Throws:

SyntaxException

EvaluationException

describeToken

public static String describeToken(StreamTokenizer tokenizer)