D.5 Package javax.faces.el

EvaluationException

This is the base class for all more specific evaluation exception classes.

Synopsis

Class name:

javax.faces.el.EvaluationException

Extends:

javax.faces.FacesException

Implements:

java.io.Serializable

Constructors

public EvaluationException(): Creates an empty instance.
public EvaluationException(String message): Creates an instance with the specified message.
public EvaluationException(String message, Throwable rootCause): Creates an instance with the specified message and root cause.
public EvaluationException(Throwable rootCause): Creates an instance with the specified root cause.

MethodBinding

An instance of a subclass of this abstract class represents a dynamic binding to a method, typically created from a method binding expression.

Synopsis

Class name:

javax.faces.el.MethodBinding

Extends:

None

Implements:

None

Constructors

public MethodBinding(): Creates an instance.

Methods

public String getExpressionString(): Returns the method binding expression used to create this instance or null if none.
public abstract Class getType(javax.faces.context.FacesContext context): Returns the Class representing the return type for the method this instance is bound to or null if void. Throws MethodNotFoundException if the method isn't found.
public abstract Object invoke(javax.faces.context.FacesContext context, Object[] params): Invokes the method this instance is bound to and returns its return value. Throws MethodNotFoundException if the method isn't found or EvaluationException wrapped around an exception thrown by the method.

MethodNotFoundException

An instance of this class is thrown to signal that the method referenced by a method binding expression can't be found.

Synopsis

Class name:

javax.faces.el.MethodNotFoundException

Extends:

javax.faces.el.EvaluationException

Implements:

java.io.Serializable

Constructors

public MethodNotFoundException(): Creates an empty instance.
public MethodNotFoundException(String message): Creates an instance with the specified message.
public MethodNotFoundException(String message, Throwable rootCause): Creates an instance with the specified message and root cause.
public MethodNotFoundException(Throwable rootCause): Creates an instance with the specified root cause.

PropertyNotFoundException

An instance of this class is thrown to signal that the property referenced by a value binding expression can't be found.

Synopsis

Class name:

javax.faces.el.PropertyNotFoundException

Extends:

javax.faces.el.EvaluationException

Implements:

java.io.Serializable

Constructors

public PropertyNotFoundException(): Creates an empty instance.
public PropertyNotFoundException(String message): Creates an instance with the specified message.
public PropertyNotFoundException(String message, Throwable rootCause): Creates an instance with the specified message and root cause.
public PropertyNotFoundException(Throwable rootCause): Creates an instance with the specified root cause.

PropertyResolver

An instance of a subclass of this abstract class resolves property and element accessor operators in a JSF EL expression. See Appendix B for details about the default resolver.

Synopsis

Class name:

javax.faces.el.PropertyResolver

Extends:

None

Implements:

None

Constructors

public PropertyResolver(): Creates an instance.

Methods

public abstract Class getType(Object base, int index): Returns the Class representing the type of the element of the base object at the specified index or null if unknown. Throws PropertyNotFoundException if the base object is null or the index is out of bounds, or EvaluationException wrapping any exception thrown while getting the type.
public abstract Class getType(Object base, Object property): Returns the Class representing the type of the property of the base object (after coercing the property to a String if the base object is a bean) or null if unknown. Throws PropertyNotFoundException if the base object is a bean and the property doesn't exist or if the base object or the property is null, or EvaluationException wrapping any exception thrown while getting the type.
public abstract Object getValue(Object base, int index): Returns the Object represented by the element of the base object at the specified index. Throws PropertyNotFoundException if the base object is null or the index is out of bounds, or EvaluationException wrapping any exception thrown while getting the value.
public abstract Object getValue(Object base, Object property): Returns the Object represented by the property of the base object (after coercing the property to a String if the base object is a bean), or null if the base object or the property is null, or if the base object is a Map and the property doesn't match a key. Throws PropertyNotFoundException if the base object is a bean and the property doesn't exist or isn't readable, or EvaluationException wrapping any exception thrown while getting the type.
public abstract boolean isReadOnly(Object base, int index): Returns true if the Object represented by the element of the base object at the specified index is known to be immutable; otherwise false. Throws PropertyNotFoundException if the base object is null or the index is out of bounds, or EvaluationException wrapping any exception thrown while getting the value.
public abstract boolean isReadOnly(Object base, Object property): Returns true if the Object represented by the property of the base object, (after coercing the property to a String if the base object is a bean) is known to be immutable; otherwise false. Throws PropertyNotFoundException if the base object is a bean and the property doesn't exist or if the base object or the property is null, or EvaluationException wrapping any exception thrown while getting the type.
public abstract void setValue(Object base, int index, Object value): Sets the element of the base object at the specified index to the provide value. Throws PropertyNotFoundException if the base object is null or the index is out of bounds, or EvaluationException wrapping any exception thrown while getting the value.
public abstract void setValue(Object base, Object property, Object value): Sets the property of the base object, (after coercing the property to a String if the base object is a bean) to the provided value. Throws PropertyNotFoundException if the base object is a bean and the property doesn't exist or isn't writable or if the base object or the property is null, or EvaluationException wrapping any exception thrown while getting the type.

ReferenceSyntaxException

An instance of this class is thrown to signal a syntax error in a value or method binding expression.

Synopsis

Class name:

javax.faces.el.ReferenceSyntaxException

Extends:

javax.faces.el.EvaluationException

Implements:

java.io.Serializable

Constructors

public ReferenceSyntaxException(): Creates an empty instance.
public ReferenceSyntaxException(String message): Creates an instance with the specified message.
public ReferenceSyntaxException(String message, Throwable rootCause): Creates an instance with the specified message and root cause.
public ReferenceSyntaxException(Throwable rootCause): Creates an instance with the specified root cause.

ValueBinding

An instance of a subclass of this abstract class represents a dynamic binding to a property or a read-only JSF EL expression, typically created from a value binding expression.

Synopsis

Class name:

javax.faces.el.ValueBinding

Extends:

None

Implements:

None

Constructors

public ValueBinding(): Creates an instance.

Methods

public String getExpressionString(): Returns the method binding expression used to create this instance or null if none.
public abstract Class getType(javax.faces.context.FacesContext context): Returns the Class representing the data type for the evaluation result of this binding. Throws PropertyNotFoundException if the value binding refers to a property that isn't found or EvaluationException wrapped around an exception thrown while evaluating the value binding.
public abstract Object getValue(javax.faces.context.FacesContext context): Returns the evaluation result for the binding. Throws PropertyNotFoundException if the value binding refers to a property that isn't found or readable, or EvaluationException wrapped around an exception thrown while evaluating the value binding.
public abstract boolean isReadOnly(javax.faces.context.FacesContext context): Returns true if the binding represents a read-only property or JSF EL expression. Throws PropertyNotFoundException if the value binding refers to a property that isn't found or readable, or EvaluationException wrapped around an exception thrown while evaluating the value binding.
public abstract void setValue(javax.faces.context.FacesContext context, Object value): Evaluates the binding and sets the property it refers to to the provide value. Throws PropertyNotFoundException if the value binding refers to a property that isn't found or writable, or EvaluationException wrapped around an exception thrown while evaluating the value binding.

VariableResolver

An instance of a subclass of this abstract class resolves variables in a JSF EL expression. See Appendix B for details about the default resolver.

Synopsis

Class name:

javax.faces.el.VariableResolver

Extends:

None

Implements:

None

Constructors

public VariableResolver(): Creates an instance.

Methods

public abstract Object resolveVariable(javax.faces.context.FacesContext context, String name): Returns the Object represented by the specified name or null if unknown. Throws EvaluationException wrapping any exception thrown while resolving the name.

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