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Eclipse JDT
Release 3.5

org.eclipse.jdt.core.dom
Class FieldAccess

java.lang.Object
  extended by 

org.eclipse.jdt.core.dom.ASTNode
      extended by 

org.eclipse.jdt.core.dom.Expression
          extended by 
org.eclipse.jdt.core.dom.FieldAccess

public class FieldAccess
extends Expression

Field access expression AST node type.

 FieldAccess:
                Expression . Identifier
 

Note that there are several kinds of expressions that resemble field access expressions: qualified names, this expressions, and super field access expressions. The following guidelines help with correct usage:

  • An expression like "foo.this" can only be represented as a this expression (ThisExpression) containing a simple name. "this" is a keyword, and therefore invalid as an identifier.
  • An expression like "this.foo" can only be represented as a field access expression (FieldAccess) containing a this expression and a simple name. Again, this is because "this" is a keyword, and therefore invalid as an identifier.
  • An expression with "super" can only be represented as a super field access expression (SuperFieldAccess). "super" is a also keyword, and therefore invalid as an identifier.
  • An expression like "foo.bar" can be represented either as a qualified name (QualifiedName) or as a field access expression (FieldAccess) containing simple names. Either is acceptable, and there is no way to choose between them without information about what the names resolve to (ASTParser may return either).
  • Other expressions ending in an identifier, such as "foo().bar" can only be represented as field access expressions (FieldAccess).

Since:
2.0
See Also:
QualifiedName, ThisExpression, SuperFieldAccess
Restriction:
This class is not intended to be instantiated by clients.

Field Summary
static  ChildPropertyDescriptor EXPRESSION_PROPERTY
          The "expression" structural property of this node type.
static  ChildPropertyDescriptor NAME_PROPERTY
          The "name" structural property of this node type.
 
Fields inherited from class org.eclipse.jdt.core.dom. ASTNode
ANNOTATION_TYPE_DECLARATION, ANNOTATION_TYPE_MEMBER_DECLARATION, ANONYMOUS_CLASS_DECLARATION, ARRAY_ACCESS, ARRAY_CREATION, ARRAY_INITIALIZER, ARRAY_TYPE, ASSERT_STATEMENT, ASSIGNMENT, BLOCK, BLOCK_COMMENT, BOOLEAN_LITERAL, BREAK_STATEMENT, CAST_EXPRESSION, CATCH_CLAUSE, CHARACTER_LITERAL, CLASS_INSTANCE_CREATION, COMPILATION_UNIT, CONDITIONAL_EXPRESSION, CONSTRUCTOR_INVOCATION, CONTINUE_STATEMENT, DO_STATEMENT, EMPTY_STATEMENT, ENHANCED_FOR_STATEMENT, ENUM_CONSTANT_DECLARATION, ENUM_DECLARATION, EXPRESSION_STATEMENT, FIELD_ACCESS, FIELD_DECLARATION, FOR_STATEMENT, IF_STATEMENT, IMPORT_DECLARATION, INFIX_EXPRESSION, INITIALIZER, INSTANCEOF_EXPRESSION, JAVADOC, LABELED_STATEMENT, LINE_COMMENT, MALFORMED, MARKER_ANNOTATION, MEMBER_REF, MEMBER_VALUE_PAIR, METHOD_DECLARATION, METHOD_INVOCATION, METHOD_REF, METHOD_REF_PARAMETER, MODIFIER, NORMAL_ANNOTATION, NULL_LITERAL, NUMBER_LITERAL, ORIGINAL, PACKAGE_DECLARATION, PARAMETERIZED_TYPE, PARENTHESIZED_EXPRESSION, POSTFIX_EXPRESSION, PREFIX_EXPRESSION, PRIMITIVE_TYPE, PROTECT, QUALIFIED_NAME, QUALIFIED_TYPE, RECOVERED, RETURN_STATEMENT, SIMPLE_NAME, SIMPLE_TYPE, SINGLE_MEMBER_ANNOTATION, SINGLE_VARIABLE_DECLARATION, STRING_LITERAL, SUPER_CONSTRUCTOR_INVOCATION, SUPER_FIELD_ACCESS, SUPER_METHOD_INVOCATION, SWITCH_CASE, SWITCH_STATEMENT, SYNCHRONIZED_STATEMENT, TAG_ELEMENT, TEXT_ELEMENT, THIS_EXPRESSION, THROW_STATEMENT, TRY_STATEMENT, TYPE_DECLARATION, TYPE_DECLARATION_STATEMENT, TYPE_LITERAL, TYPE_PARAMETER, VARIABLE_DECLARATION_EXPRESSION, VARIABLE_DECLARATION_FRAGMENT, VARIABLE_DECLARATION_STATEMENT, WHILE_STATEMENT, WILDCARD_TYPE
 
Method Summary
  Expression getExpression ()
          Returns the expression of this field access expression.
  SimpleName getName ()
          Returns the name of the field accessed in this field access expression.
static  List propertyDescriptors (int apiLevel)
          Returns a list of structural property descriptors for this node type.
  IVariableBinding resolveFieldBinding ()
          Resolves and returns the binding for the field accessed by this expression.
 void setExpression ( Expression expression)
          Sets the expression of this field access expression.
 void setName ( SimpleName fieldName)
          Sets the name of the field accessed in this field access expression.
 
Methods inherited from class org.eclipse.jdt.core.dom. Expression
resolveBoxing, resolveConstantExpressionValue, resolveTypeBinding, resolveUnboxing
 
Methods inherited from class org.eclipse.jdt.core.dom. ASTNode
accept, copySubtree, copySubtrees, delete, equals, getAST, getFlags, getLength, getLocationInParent, getNodeType, getParent, getProperty, getRoot, getStartPosition, getStructuralProperty, hashCode, nodeClassForType, properties, setFlags, setProperty, setSourceRange, setStructuralProperty, structuralPropertiesForType, subtreeBytes, subtreeMatch, toString
 
Methods inherited from class java.lang. Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

EXPRESSION_PROPERTY

public static final 
ChildPropertyDescriptor EXPRESSION_PROPERTY
The "expression" structural property of this node type.

Since:
3.0

NAME_PROPERTY

public static final 
ChildPropertyDescriptor NAME_PROPERTY
The "name" structural property of this node type.

Since:
3.0
Method Detail

propertyDescriptors

public static 
List propertyDescriptors(int apiLevel)
Returns a list of structural property descriptors for this node type. Clients must not modify the result.

Parameters:
apiLevel - the API level; one of the AST.JLS* constants
Returns:
a list of property descriptors (element type: StructuralPropertyDescriptor)
Since:
3.0

getExpression

public 
Expression getExpression()
Returns the expression of this field access expression.

Returns:
the expression node

setExpression

public void setExpression(
Expression expression)
Sets the expression of this field access expression.

Parameters:
expression - the new expression
Throws:
IllegalArgumentException - if:
  • the node belongs to a different AST
  • the node already has a parent
  • a cycle in would be created

getName

public 
SimpleName getName()
Returns the name of the field accessed in this field access expression.

Returns:
the field name

setName

public void setName(
SimpleName fieldName)
Sets the name of the field accessed in this field access expression.

Parameters:
fieldName - the field name
Throws:
IllegalArgumentException - if:
  • the node belongs to a different AST
  • the node already has a parent

resolveFieldBinding

public 
IVariableBinding resolveFieldBinding()
Resolves and returns the binding for the field accessed by this expression.

Note that bindings are generally unavailable unless requested when the AST is being built.

Returns:
the variable binding, or null if the binding cannot be resolved
Since:
3.0

Eclipse JDT
Release 3.5

Copyright (c) IBM Corp. and others 2000, 2008. All Rights Reserved.

 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire