net.sf.saffron.core
Class PlanWriter

java.lang.Object
  |
  +--java.io.Writer
        |
        +--java.io.PrintWriter
              |
              +--net.sf.saffron.core.PlanWriter

public class PlanWriter

extends PrintWriter

Callback for an expression to dump itself to.

Field Summary

(package private) HashSet	active Recursion detection.
(package private) boolean	brief
(package private) int	level
boolean	withIdPrefix

Fields inherited from class java.io.PrintWriter

out

Fields inherited from class java.io.Writer

lock

Constructor Summary

PlanWriter(PrintWriter pw)

PlanWriter(PrintWriter pw, boolean brief)

Method Summary

void	explain(SaffronRel rel, String[] terms)
void	explain(SaffronRel rel, String[] terms, Object[] values)
private void	explainBrief(String s, SaffronRel rel, String[] terms)
void	explainSubset(String s, SaffronRel child) Special form used by RelSubset.
void	explainTree(SaffronRel exp)

Methods inherited from class java.io.PrintWriter

checkError, close, flush, print, print, print, print, print, print, print, print, print, println, println, println, println, println, println, println, println, println, println, setError, write, write, write, write, write

Methods inherited from class java.lang.Object

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

Field Detail

withIdPrefix

public boolean withIdPrefix

active

HashSet active

Recursion detection.

brief

boolean brief

level

int level

Constructor Detail

PlanWriter

public PlanWriter(PrintWriter pw)

PlanWriter

public PlanWriter(PrintWriter pw,
                  boolean brief)

Method Detail

explain

public void explain(SaffronRel rel,
                    String[] terms,
                    Object[] values)

Pre-condition:

rel != null, terms.length == rel.getChildExps().length + values.length, values != null

explain

public void explain(SaffronRel rel,
                    String[] terms)

explainSubset

public void explainSubset(String s,
                          SaffronRel child)

Special form used by RelSubset.

explainTree

public void explainTree(SaffronRel exp)

explainBrief

private void explainBrief(String s,
                          SaffronRel rel,
                          String[] terms)