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java.lang.Objectorg.apache.velocity.runtime.parser.node.SimpleNode
org.apache.velocity.runtime.parser.node.ASTReference
public class ASTReference
This class is responsible for handling the references in VTL ($foo). Please look at the Parser.jjt file which is what controls the generation of this class.
Field Summary | |
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private boolean |
computableReference
|
private boolean |
escaped
|
private java.lang.String |
escPrefix
|
private static int |
FORMAL_REFERENCE
|
private java.lang.String |
identifier
|
private java.lang.String |
literal
|
private java.lang.String |
morePrefix
|
private static int |
NORMAL_REFERENCE
|
private java.lang.String |
nullString
|
private int |
numChildren
|
private static int |
QUIET_REFERENCE
|
private int |
referenceType
|
private java.lang.String |
rootString
|
private static int |
RUNT
|
protected Info |
uberInfo
|
Fields inherited from class org.apache.velocity.runtime.parser.node.SimpleNode |
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children, first, id, info, invalid, last, parent, parser, rsvc, state |
Constructor Summary | |
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ASTReference(int id)
|
|
ASTReference(Parser p,
int id)
|
Method Summary | |
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boolean |
evaluate(InternalContextAdapter context)
Computes boolean value of this reference Returns the actual value of reference return type boolean, and 'true' if value is not null |
java.lang.Object |
execute(java.lang.Object o,
InternalContextAdapter context)
gets an Object that 'is' the value of the reference |
private java.lang.String |
getRoot()
|
java.lang.String |
getRootString()
Returns the 'root string', the reference key |
java.lang.Object |
getVariableValue(Context context,
java.lang.String variable)
|
java.lang.Object |
init(InternalContextAdapter context,
java.lang.Object data)
|
java.lang.Object |
jjtAccept(ParserVisitor visitor,
java.lang.Object data)
Accept the visitor. |
java.lang.String |
literal()
Override of the SimpleNode method literal() Returns the literal representation of the node. |
boolean |
render(InternalContextAdapter context,
java.io.Writer writer)
gets the value of the reference and outputs it to the writer. |
void |
setLiteral(java.lang.String literal)
Routine to allow the literal representation to be externally overridden. |
boolean |
setValue(InternalContextAdapter context,
java.lang.Object value)
Sets the value of a complex reference (something like $foo.bar) Currently used by ASTSetReference() |
java.lang.Object |
value(InternalContextAdapter context)
|
Methods inherited from class org.apache.velocity.runtime.parser.node.SimpleNode |
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childrenAccept, dump, getColumn, getFirstToken, getInfo, getLastToken, getLine, getType, isInvalid, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, setFirstToken, setInfo, setInvalid, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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private static final int NORMAL_REFERENCE
private static final int FORMAL_REFERENCE
private static final int QUIET_REFERENCE
private static final int RUNT
private int referenceType
private java.lang.String nullString
private java.lang.String rootString
private boolean escaped
private boolean computableReference
private java.lang.String escPrefix
private java.lang.String morePrefix
private java.lang.String identifier
private java.lang.String literal
private int numChildren
protected Info uberInfo
Constructor Detail |
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public ASTReference(int id)
public ASTReference(Parser p, int id)
Method Detail |
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public java.lang.Object jjtAccept(ParserVisitor visitor, java.lang.Object data)
jjtAccept
in interface Node
jjtAccept
in class SimpleNode
public java.lang.Object init(InternalContextAdapter context, java.lang.Object data) throws java.lang.Exception
init
in interface Node
init
in class SimpleNode
java.lang.Exception
public java.lang.String getRootString()
public java.lang.Object execute(java.lang.Object o, InternalContextAdapter context) throws MethodInvocationException
execute
in interface Node
execute
in class SimpleNode
o
- unused Object parametercontext
- context used to generate value
MethodInvocationException
public boolean render(InternalContextAdapter context, java.io.Writer writer) throws java.io.IOException, MethodInvocationException
render
in interface Node
render
in class SimpleNode
context
- context of data to use in getting valuewriter
- writer to render to
java.io.IOException
MethodInvocationException
public boolean evaluate(InternalContextAdapter context) throws MethodInvocationException
evaluate
in interface Node
evaluate
in class SimpleNode
context
- context to compute value with
MethodInvocationException
public java.lang.Object value(InternalContextAdapter context) throws MethodInvocationException
value
in interface Node
value
in class SimpleNode
MethodInvocationException
public boolean setValue(InternalContextAdapter context, java.lang.Object value) throws MethodInvocationException
context
- context object containing this referencevalue
- Object to set as value
MethodInvocationException
ASTSetDirective
private java.lang.String getRoot()
public java.lang.Object getVariableValue(Context context, java.lang.String variable)
public void setLiteral(java.lang.String literal)
literal
- String to render to when nullpublic java.lang.String literal()
literal
in interface Node
literal
in class SimpleNode
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