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.ELResolverProvides 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.ClassgetType(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)Obtain the most generally acceptable type that may be used to set the given property on the given object using the given context.java.lang.ObjectgetValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)Obtain the value of the given property on the given object using the given context.booleanisReadOnly(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)Determine if the given property on the given object is read-only using the given context.voidsetValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value)Set the value of the given property on the given object using the given context.
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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)Description copied from class:javax.el.ELResolverObtain the value of the given property on the given object using the given context.- Specified by:
getValuein 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)Description copied from class:javax.el.ELResolverObtain the most generally acceptable type that may be used to set the given property on the given object using the given context.- Specified by:
getTypein 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 most general type that maybe used to set the provided property or
nullif the resolver is read-only.
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setValue
public void setValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value)Description copied from class:javax.el.ELResolverSet the value of the given property on the given object using the given context.- Specified by:
setValuein 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)Description copied from class:javax.el.ELResolverDetermine if the given property on the given object is read-only using the given context.- Specified by:
isReadOnlyin 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:
trueif 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.ELResolverObtain the feature descriptors for the resolvable properties of the given object.- Specified by:
getFeatureDescriptorsin 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.ELResolverObtain the most common type that is acceptable for the given base object.- Specified by:
getCommonPropertyTypein 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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