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java.lang.Objectorg.apache.openjpa.kernel.exps.Exp
org.apache.openjpa.kernel.exps.BindVariableExpression
class BindVariableExpression
Binds a variable to a collection.
| Constructor Summary | |
|---|---|
BindVariableExpression(BoundVariable var,
Val val)
Constructor. |
|
| Method Summary | |
|---|---|
void |
acceptVisit(ExpressionVisitor visitor)
Accept a visit from a tree visitor. |
protected boolean |
eval(Collection candidates,
StoreContext ctx,
Object[] params)
Evaluate the expression for the given group. |
protected boolean |
eval(Object candidate,
Object orig,
StoreContext ctx,
Object[] params)
Evaluate the expression for the given context candidate and original candidate. |
protected Collection |
getCollection(Object values)
Return a collection for the given object, produced by eval'ing the value of this expression. |
BoundVariable |
getVariable()
|
Collection |
getVariableValues(Object candidate,
Object orig,
StoreContext ctx,
Object[] params)
Return the possible values that variable can take. |
| Methods inherited from class org.apache.openjpa.kernel.exps.Exp |
|---|
evaluate, evaluate |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public BindVariableExpression(BoundVariable var,
Val val)
var - the bound variableval - the value the variable is bound to| Method Detail |
|---|
public BoundVariable getVariable()
public Collection getVariableValues(Object candidate,
Object orig,
StoreContext ctx,
Object[] params)
protected Collection getCollection(Object values)
eval'ing the value of this expression. Simply casts
the object to a collection by default.
protected boolean eval(Object candidate,
Object orig,
StoreContext ctx,
Object[] params)
Exp
eval in class Exp
protected boolean eval(Collection candidates,
StoreContext ctx,
Object[] params)
Exp
eval in class Exppublic void acceptVisit(ExpressionVisitor visitor)
Expression
acceptVisit in interface ExpressionacceptVisit in class Exp
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