public class Coalesce extends Val
Modifier and Type | Method and Description |
---|---|
void |
acceptVisit(ExpressionVisitor visitor)
Accept a visit from a tree visitor.
|
protected boolean |
compare(java.lang.Object o1,
java.lang.Object o2)
Compare the two values.
|
protected java.lang.Object |
eval(java.lang.Object candidate,
java.lang.Object orig,
StoreContext ctx,
java.lang.Object[] params)
Return this value for the given candidate.
|
protected java.lang.Object |
eval(java.lang.Object candidate,
StoreContext ctx,
java.lang.Object[] params) |
java.lang.Class |
getType()
Return the expected type for this value, or
Object if
the type is unknown. |
Val[] |
getVal() |
void |
setImplicitType(java.lang.Class type)
Set the implicit type of the value, based on how it is used in the
filter.
|
eval, evaluate, evaluate, getAlias, getMetaData, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, setMetaData
protected java.lang.Object eval(java.lang.Object candidate, java.lang.Object orig, StoreContext ctx, java.lang.Object[] params)
Val
protected java.lang.Object eval(java.lang.Object candidate, StoreContext ctx, java.lang.Object[] params)
protected boolean compare(java.lang.Object o1, java.lang.Object o2)
public Val[] getVal()
public java.lang.Class getType()
Value
Object
if
the type is unknown.public void setImplicitType(java.lang.Class type)
Value
Object
from Value.getType()
.public void acceptVisit(ExpressionVisitor visitor)
Value
acceptVisit
in interface Value
acceptVisit
in class Val