Direct Known Subclasses:

ArrayELResolver, BeanELResolver, CompositeELResolver, ImplicitObjectELResolver, ListELResolver, MapELResolver, ResourceBundleELResolver, ScopedAttributeELResolver

public abstract class ELResolver
extends java.lang.Object

Since:

2.1

• Field Summary

  Fields

  Modifier and Type	Field and Description
  static java.lang.String	RESOLVABLE_AT_DESIGN_TIME FeatureDescriptor property indicating whether the variable or property can be resolved at compile time.
  static java.lang.String	TYPE FeatureDescriptor property indicating the class of the variable or property.

• Constructor Summary

  Constructors

  Constructor and Description
  ELResolver ()

• Method Summary

  Methods

  Modifier and Type	Method and Description
  abstract java.lang.Class	getCommonPropertyType (ELContext context, java.lang.Object base) Returns the most general class of properties in the base object.
  abstract java.util.Iterator<java.beans.FeatureDescriptor>	getFeatureDescriptors (ELContext context, java.lang.Object base) Returns metadata about the variables or properties within the specified base object.
  abstract java.lang.Class	getType (ELContext context, java.lang.Object base, java.lang.Object property) Returns the class of the specified property of the base object.
  abstract java.lang.Object	getValue (ELContext context, java.lang.Object base, java.lang.Object property) Resolves the specified property of the base object.
  abstract boolean	isReadOnly (ELContext context, java.lang.Object base, java.lang.Object property) Indicates whether the specified property of the base object is read-only.
  abstract void	setValue (ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value) Sets the value of the specified property of the base object.

  • Methods inherited from class java.lang.Object

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

• Field Detail

  • RESOLVABLE_AT_DESIGN_TIME

    public static final java.lang.String RESOLVABLE_AT_DESIGN_TIME

    FeatureDescriptor property indicating whether the variable or property can be resolved at compile time.

    See Also:

    Constant Field Values

  • TYPE

    public static final java.lang.String TYPE

    FeatureDescriptor property indicating the class of the variable or property.

    See Also:

    Constant Field Values

• Constructor Detail

  • ELResolver

    public ELResolver()

• Method Detail

  • getValue

    public abstract java.lang.Object getValue(ELContext context,
     java.lang.Object base,
     java.lang.Object property)
     throws java.lang.NullPointerException,
     PropertyNotFoundException,
     ELException 

    Resolves the specified property of the base object.

    Parameters:

    context - the evaluation context

    base - the target of the operation

    property - the property of the base object

    Throws:

    java.lang.NullPointerException

    PropertyNotFoundException

    ELException

  • getType

    public abstract java.lang.Class getType(ELContext context,
     java.lang.Object base,
     java.lang.Object property)
     throws java.lang.NullPointerException,
     PropertyNotFoundException,
     ELException 

    Returns the class of the specified property of the base object.

    Parameters:

    context - the evaluation context

    base - the target of the operation

    property - the property of the base object

    Throws:

    java.lang.NullPointerException

    PropertyNotFoundException

    ELException

  • setValue

    public abstract void setValue(ELContext context,
     java.lang.Object base,
     java.lang.Object property,
     java.lang.Object value)
     throws java.lang.NullPointerException,
     PropertyNotFoundException,
     PropertyNotWritableException,
     ELException 

    Sets the value of the specified property of the base object.

    Parameters:

    context - the evaluation context

    base - the target of the operation

    property - the property of the base object

    value - the new value of the property

    Throws:

    PropertyNotWritableException - if the property is read-only

    java.lang.NullPointerException

    PropertyNotFoundException

    ELException

  • isReadOnly

    public abstract boolean isReadOnly(ELContext context,
     java.lang.Object base,
     java.lang.Object property)
     throws java.lang.NullPointerException,
     PropertyNotFoundException,
     ELException 

    Indicates whether the specified property of the base object is read-only.

    Parameters:

    context - the evaluation context

    base - the target of the operation

    property - the property of the base object

    Throws:

    java.lang.NullPointerException

    PropertyNotFoundException

    ELException

  • getFeatureDescriptors

    public abstract java.util.Iterator<java.beans.FeatureDescriptor> getFeatureDescriptors(ELContext context,
     java.lang.Object base)

    Returns metadata about the variables or properties within the specified base object.

    Parameters:

    context - the evaluation context

    base - the target of the operation

  • getCommonPropertyType

    public abstract java.lang.Class getCommonPropertyType(ELContext context,
     java.lang.Object base)

    Returns the most general class of properties in the base object.

    Parameters:

    context - the evaluation context

    base - the target of the operation