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Java Source Code / Java Documentation » Template Engine » Tea » com.go.tea.parsetree   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.go.tea.parsetree.Node       com.go.tea.parsetree.Expression          com.go.tea.parsetree.Lookup Lookup public class Lookup extends Expression (Code) A Lookup can access properties on objects. A Bean Introspector is used to get the available properties from an object. Arrays, Lists and Strings also have a built-in property named "length". For arrays, the length field is retrieved, for Lists, the size() method is called, and for Strings, the length() method is called. author:    Brian S O'Neill version:    24 , 9/07/00 See Also:   java.beans.Introspector Constructor Summary public   Lookup(SourceInfo info, Expression expr, Token dot, Name lookupName)      Method Summary public  Object accept(NodeVisitor visitor)      public  Object clone()      public  Token getDot()      public  Expression getExpression()      public  Name getLookupName()      public  Method getReadMethod()      Returns the method to invoke in order to perform the lookup. public  boolean isExceptionPossible()      public  void setExpression(Expression expr)      public  void setReadMethod(Method m)      Constructor Detail Lookup public Lookup(SourceInfo info, Expression expr, Token dot, Name lookupName)(Code) Method Detail accept public Object accept(NodeVisitor visitor)(Code) clone public Object clone()(Code) getDot public Token getDot()(Code) getExpression public Expression getExpression()(Code) getLookupName public Name getLookupName()(Code) getReadMethod public Method getReadMethod()(Code) Returns the method to invoke in order to perform the lookup. This is filled in by the type checker. If the lookup name is "length" and the expression type is an array, the read method is null. A code generator must still be able to get the length of the array. isExceptionPossible public boolean isExceptionPossible()(Code) setExpression public void setExpression(Expression expr)(Code) setReadMethod public void setReadMethod(Method m)(Code) Methods inherited from com.go.tea.parsetree.Expression public Object accept(NodeVisitor visitor)(Code)(Java Doc) public Object clone()(Code)(Java Doc) final public void convertTo(Type toType)(Code)(Java Doc) public void convertTo(Type toType, boolean preferCast)(Code)(Java Doc) public LinkedList getConversionChain()(Code)(Java Doc) public Type getInitialType()(Code)(Java Doc) public Type getType()(Code)(Java Doc) public Object getValue()(Code)(Java Doc) public boolean isExceptionPossible()(Code)(Java Doc) public boolean isValueKnown()(Code)(Java Doc) public void setInitialType(Type type)(Code)(Java Doc) public void setType(Type type)(Code)(Java Doc) Methods inherited from com.go.tea.parsetree.Node abstract public Object accept(NodeVisitor visitor)(Code)(Java Doc) public Object clone()(Code)(Java Doc) final public SourceInfo getSourceInfo()(Code)(Java Doc) public String toString()(Code)(Java Doc) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)