Package javax.servlet.jsp.el
Class ImplicitObjectELResolver
- java.lang.Object
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- javax.el.ELResolver
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- javax.servlet.jsp.el.ImplicitObjectELResolver
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public class ImplicitObjectELResolver extends javax.el.ELResolver
Provides resolution in EL for the implicit variables of a JSP page.- Since:
- JSP 2.1
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Constructor Summary
Constructors Constructor Description ImplicitObjectELResolver()
Creates an instance of the implicit object resolver for EL.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Class<java.lang.String>
getCommonPropertyType(javax.el.ELContext context, java.lang.Object base)
Obtain the most common type that is acceptable for the given base object.java.util.Iterator<java.beans.FeatureDescriptor>
getFeatureDescriptors(javax.el.ELContext context, java.lang.Object base)
Obtain the feature descriptors for the resolvable properties of the given object.java.lang.Class
getType(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)
java.lang.Object
getValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)
boolean
isReadOnly(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)
void
setValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value)
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Method Detail
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getValue
public java.lang.Object getValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)
- Specified by:
getValue
in classjavax.el.ELResolver
- Parameters:
context
- The EL context for this evaluationbase
- The base object on which the property is to be foundproperty
- The property whose value is to be returned- Returns:
- the value of the provided property
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getType
public java.lang.Class getType(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)
- Specified by:
getType
in classjavax.el.ELResolver
- Parameters:
context
- The EL context for this evaluationbase
- The base object on which the property is to be foundproperty
- The property whose type is to be returned- Returns:
- the type of the provided property
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setValue
public void setValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value)
- Specified by:
setValue
in classjavax.el.ELResolver
- Parameters:
context
- The EL context for this evaluationbase
- The base object on which the property is to be foundproperty
- The property whose value is to be setvalue
- The value to set the property to
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isReadOnly
public boolean isReadOnly(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)
- Specified by:
isReadOnly
in classjavax.el.ELResolver
- Parameters:
context
- The EL context for this evaluationbase
- The base object on which the property is to be foundproperty
- The property to be checked for read only status- Returns:
true
if the identified property is read only, otherwisefalse
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getFeatureDescriptors
public java.util.Iterator<java.beans.FeatureDescriptor> getFeatureDescriptors(javax.el.ELContext context, java.lang.Object base)
Description copied from class:javax.el.ELResolver
Obtain the feature descriptors for the resolvable properties of the given object.- Specified by:
getFeatureDescriptors
in classjavax.el.ELResolver
- Parameters:
context
- The context in which the examination takes placebase
- The object to examine- Returns:
- An iterator, possibly empty, of feature descriptors of the given object
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getCommonPropertyType
public java.lang.Class<java.lang.String> getCommonPropertyType(javax.el.ELContext context, java.lang.Object base)
Description copied from class:javax.el.ELResolver
Obtain the most common type that is acceptable for the given base object.- Specified by:
getCommonPropertyType
in classjavax.el.ELResolver
- Parameters:
context
- The context in which the examination takes placebase
- The object to examine- Returns:
- {code null} if the most common type cannot be determine, otherwise the most common type
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