Package org.apache.jena.arq.querybuilder.rewriters

Class AbstractRewriter<T>

java.lang.Object

org.apache.jena.arq.querybuilder.rewriters.AbstractRewriter<T>

Type Parameters:

T - The type of object being rewritten.

Direct Known Subclasses:

ElementRewriter, ExprRewriter, PathRewriter

public class AbstractRewriter<T>
extends Object

The base class for rewriters. Rewriters push and pop items on the stack during processing.

Method Summary

Modifier and Type	Method	Description
final T	getResult()	Get the result from the rewriter.
final List<Triple>	rewrite(List<Triple> src)	Rewrite a list of triples.
final Triple	rewrite(Triple t)	Rewrite a triple.
TriplePath	rewrite(TriplePath t)	Rewrite a triple path.
final VarExprList	rewrite(VarExprList lst)	Rewrite a variable expression list.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

getResult

public final T getResult()

Get the result from the rewriter. Returns the top of the stack.

Returns:

The final result or null if there is no answer.

rewrite

public TriplePath rewrite(TriplePath t)

Rewrite a triple path.

Parameters:

t - The triple path to rewrite.

Returns:

the triple path after rewriting.

rewrite

public final Triple rewrite(Triple t)

Rewrite a triple.

Parameters:

t - The triple to rewrite.

Returns:

The rewritten triple.

rewrite

public final List<Triple> rewrite(List<Triple> src)

Rewrite a list of triples.

Parameters:

src - The list of triples to rewrite.

Returns:

The list of rewritten triples.

rewrite

public final VarExprList rewrite(VarExprList lst)

Rewrite a variable expression list.

Parameters:

lst - The variable expression list.

Returns:

the rewritten variable expression list.