Package org.apache.jasper.el
Class JspValueExpression
- java.lang.Object
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- javax.el.Expression
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- javax.el.ValueExpression
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- org.apache.jasper.el.JspValueExpression
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- All Implemented Interfaces:
Externalizable,Serializable
public final class JspValueExpression extends ValueExpression implements Externalizable
Wrapper for providing context to ValueExpressions- Author:
- Jacob Hookom
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description JspValueExpression()JspValueExpression(String mark, ValueExpression target)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description booleanequals(Object obj)Class<?>getExpectedType()StringgetExpressionString()Class<?>getType(ELContext context)ObjectgetValue(ELContext context)inthashCode()booleanisLiteralText()booleanisReadOnly(ELContext context)voidreadExternal(ObjectInput in)voidsetValue(ELContext context, Object value)voidwriteExternal(ObjectOutput out)-
Methods inherited from class javax.el.ValueExpression
getValueReference
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Constructor Detail
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JspValueExpression
public JspValueExpression()
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JspValueExpression
public JspValueExpression(String mark, ValueExpression target)
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Method Detail
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getExpectedType
public Class<?> getExpectedType()
- Specified by:
getExpectedTypein classValueExpression
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getType
public Class<?> getType(ELContext context) throws NullPointerException, PropertyNotFoundException, ELException
- Specified by:
getTypein classValueExpression- Parameters:
context- The EL context for this evaluation- Returns:
- The type of the result of this value expression
- Throws:
NullPointerException- If the supplied context isnullPropertyNotFoundException- If a property/variable resolution failed because no match was found or a match was found but was not readableELException- Wraps any exception throw whilst resolving a property or variable
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isReadOnly
public boolean isReadOnly(ELContext context) throws NullPointerException, PropertyNotFoundException, ELException
- Specified by:
isReadOnlyin classValueExpression- Parameters:
context- The EL context for this evaluation- Returns:
trueif this expression is read only otherwisefalse- Throws:
NullPointerException- If the supplied context isnullPropertyNotFoundException- If a property/variable resolution failed because no match was found or a match was found but was not readableELException- Wraps any exception throw whilst resolving a property or variable
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setValue
public void setValue(ELContext context, Object value) throws NullPointerException, PropertyNotFoundException, PropertyNotWritableException, ELException
- Specified by:
setValuein classValueExpression- Parameters:
context- The EL context for this evaluationvalue- The value to set the property to which this value expression refers- Throws:
NullPointerException- If the supplied context isnullPropertyNotFoundException- If a property/variable resolution failed because no match was foundPropertyNotWritableException- If a property/variable resolution failed because a match was found but was not writableELException- Wraps any exception throw whilst resolving a property or variable
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getValue
public Object getValue(ELContext context) throws NullPointerException, PropertyNotFoundException, ELException
- Specified by:
getValuein classValueExpression- Parameters:
context- The EL context for this evaluation- Returns:
- The result of evaluating this value expression
- Throws:
NullPointerException- If the supplied context isnullPropertyNotFoundException- If a property/variable resolution failed because no match was found or a match was found but was not readableELException- Wraps any exception throw whilst resolving a property or variable
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equals
public boolean equals(Object obj)
- Specified by:
equalsin classExpression
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hashCode
public int hashCode()
- Specified by:
hashCodein classExpression
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getExpressionString
public String getExpressionString()
- Specified by:
getExpressionStringin classExpression
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isLiteralText
public boolean isLiteralText()
- Specified by:
isLiteralTextin classExpression
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writeExternal
public void writeExternal(ObjectOutput out) throws IOException
- Specified by:
writeExternalin interfaceExternalizable- Throws:
IOException
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readExternal
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
- Specified by:
readExternalin interfaceExternalizable- Throws:
IOExceptionClassNotFoundException
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