public final class IndexedValueExpression extends ValueExpression
| Modifier and Type | Field and Description |
|---|---|
protected Integer |
i |
protected ValueExpression |
orig |
| Constructor and Description |
|---|
IndexedValueExpression(ValueExpression orig,
int i) |
| Modifier and Type | Method and Description |
|---|---|
boolean |
equals(Object obj)
Determines whether the specified object is equal to this
Expression. |
Class |
getExpectedType()
Returns the type the result of the expression will be coerced to after evaluation.
|
String |
getExpressionString()
Returns the original String used to create this
Expression, unmodified. |
Class |
getType(ELContext context)
Evaluates the expression relative to the provided context, and returns the most general type that is acceptable for
an object to be passed as the
value parameter in a future call to the ValueExpression.setValue(jakarta.el.ELContext, java.lang.Object) method. |
Object |
getValue(ELContext context)
Evaluates the expression relative to the provided context, and returns the resulting value.
|
int |
hashCode()
Returns the hash code for this
Expression. |
boolean |
isLiteralText()
Returns whether this expression was created from only literal text.
|
boolean |
isReadOnly(ELContext context)
Evaluates the expression relative to the provided context, and returns
true if a call to
ValueExpression.setValue(jakarta.el.ELContext, java.lang.Object) will always fail. |
void |
setValue(ELContext context,
Object value)
Evaluates the expression relative to the provided context, and sets the result to the provided value.
|
getValueReferenceprotected final Integer i
protected final ValueExpression orig
public IndexedValueExpression(ValueExpression orig, int i)
public Object getValue(ELContext context)
ValueExpression
The resulting value is automatically coerced to the type returned by getExpectedType(), which was
provided to the ExpressionFactory when this expression was created.
getValue in class ValueExpressioncontext - The context of this evaluation.public void setValue(ELContext context, Object value)
ValueExpressionsetValue in class ValueExpressioncontext - The context of this evaluation.value - The new value to be set.public boolean isReadOnly(ELContext context)
ValueExpressiontrue if a call to
ValueExpression.setValue(jakarta.el.ELContext, java.lang.Object) will always fail.isReadOnly in class ValueExpressioncontext - The context of this evaluation.true if the expression is read-only or false if not.public Class getType(ELContext context)
ValueExpressionvalue parameter in a future call to the ValueExpression.setValue(jakarta.el.ELContext, java.lang.Object) method.
This is not always the same as getValue().getClass(). For example, in the case of an expression that
references an array element, the getType method will return the element type of the array, which might
be a superclass of the type of the actual element that is currently in the specified array element.
getType in class ValueExpressioncontext - The context of this evaluation.public Class getExpectedType()
ValueExpressiongetExpectedType in class ValueExpressionexpectedType passed to the ExpressionFactory.createValueExpression method that
created this ValueExpression.public String getExpressionString()
ExpressionExpression, unmodified.
This is used for debugging purposes but also for the purposes of comparison (e.g. to ensure the expression in a configuration file has not changed).
This method does not provide sufficient information to re-create an expression. Two different expressions can have
exactly the same expression string but different function mappings. Serialization should be used to save and restore
the state of an Expression.
getExpressionString in class Expressionpublic boolean equals(Object obj)
ExpressionExpression.
The result is true if and only if the argument is not null, is an Expression
object that is the of the same type (ValueExpression or MethodExpression), and has an
identical parsed representation.
Note that two expressions can be equal if their expression Strings are different. For example,
${fn1:foo()} and ${fn2:foo()} are equal if their corresponding FunctionMappers
mapped fn1:foo and fn2:foo to the same method.
equals in class Expressionobj - the Object to test for equality.true if obj equals this Expression; false otherwise.Hashtable,
Object.equals(java.lang.Object)public int hashCode()
ExpressionExpression.
See the note in the Expression.equals(java.lang.Object) method on how two expressions can be equal if their expression Strings are
different. Recall that if two objects are equal according to the equals(Object) method, then calling the
hashCode method on each of the two objects must produce the same integer result. Implementations must
take special note and implement hashCode correctly.
hashCode in class ExpressionExpression.Expression.equals(java.lang.Object),
Hashtable,
Object.hashCode()public boolean isLiteralText()
Expression
This method must return true if and only if the expression string this expression was created from
contained no unescaped Jakarta Expression Language delimeters (${...} or #{...}).
isLiteralText in class Expressiontrue if this expression was created from only literal text; false otherwise.Copyright © 2018,2020 Eclipse Foundation.
Use is subject to license terms.