org.javarosa.xpath

Class XPathConditional

java.lang.Object

org.javarosa.xpath.XPathConditional

All Implemented Interfaces:

IConditionExpr, Externalizable

public class XPathConditional
extends Object
implements IConditionExpr

Field Summary

Fields

Modifier and Type	Field and Description
boolean	hasNow
String	xpath

Constructor Summary

Constructors

Constructor and Description
XPathConditional()
XPathConditional(String xpath)
XPathConditional(XPathExpression expr)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
boolean	eval(DataInstance model, EvaluationContext evalContext) Evaluate this expression against the current models and context and provide a true or false value.
List<TreeReference>	evalNodeset(DataInstance model, EvaluationContext evalContext) Used for itemsets.
Object	evalRaw(DataInstance model, EvaluationContext evalContext) Evaluate this expression against the current models and context and provide the final value of the expression, without forcing a cast to a boolean value.
String	evalReadable(DataInstance model, EvaluationContext evalContext) Used for itemsets.
XPathExpression	getExpr()
Set<TreeReference>	getTriggers(TreeReference contextRef) Provides a list of all of the references that this expression's value depends upon directly.
List<Object>	pivot(DataInstance model, EvaluationContext evalContext) Provide a list of Pivots around which this Condition Expression depends.
void	readExternal(DataInputStream in, PrototypeFactory pf)
String	toString()
void	writeExternal(DataOutputStream out)

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

xpath

public String xpath

hasNow

public boolean hasNow

Constructor Detail

XPathConditional

public XPathConditional(String xpath)
                 throws XPathSyntaxException

Throws:

XPathSyntaxException

XPathConditional

public XPathConditional(XPathExpression expr)

XPathConditional

public XPathConditional()

Method Detail

getExpr

public XPathExpression getExpr()

evalRaw

public Object evalRaw(DataInstance model,
                      EvaluationContext evalContext)

Description copied from interface: IConditionExpr

Evaluate this expression against the current models and context and provide the final value of the expression, without forcing a cast to a boolean value.

Specified by:

evalRaw in interface IConditionExpr

Returns:

eval

public boolean eval(DataInstance model,
                    EvaluationContext evalContext)

Description copied from interface: IConditionExpr

Evaluate this expression against the current models and context and provide a true or false value.

Specified by:

eval in interface IConditionExpr

Returns:

evalReadable

public String evalReadable(DataInstance model,
                           EvaluationContext evalContext)

Description copied from interface: IConditionExpr

Used for itemsets. Fill this documentation in.

Specified by:

evalReadable in interface IConditionExpr

Returns:

evalNodeset

public List<TreeReference> evalNodeset(DataInstance model,
                                       EvaluationContext evalContext)

Description copied from interface: IConditionExpr

Used for itemsets. Fill this documentation in.

Specified by:

evalNodeset in interface IConditionExpr

Returns:

getTriggers

public Set<TreeReference> getTriggers(TreeReference contextRef)

Description copied from interface: IConditionExpr

Provides a list of all of the references that this expression's value depends upon directly. These values can't be contextualized fully (since these triggers are necessary before runtime), but should only need to be contextualized to be a complete set.

Specified by:

getTriggers in interface IConditionExpr

Returns:

equals

public boolean equals(Object o)

Overrides:

equals in class Object

readExternal

public void readExternal(DataInputStream in,
                         PrototypeFactory pf)
                  throws IOException,
                         DeserializationException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

DeserializationException

writeExternal

public void writeExternal(DataOutputStream out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

pivot

public List<Object> pivot(DataInstance model,
                          EvaluationContext evalContext)
                   throws UnpivotableExpressionException

Description copied from interface: IConditionExpr

Provide a list of Pivots around which this Condition Expression depends. Optional to implement. If not implemented, throw an Unpivotable Expression exception to signal that the expression cannot be statically evaluated.

Specified by:

pivot in interface IConditionExpr

Returns:

Throws:

UnpivotableExpressionException