org.trippi.impl.kowari
Class SimpleAnswer

java.lang.Object
  org.trippi.impl.kowari.SimpleAnswer

All Implemented Interfaces:

java.lang.Cloneable, org.kowari.query.Answer, org.kowari.query.Cursor

public class SimpleAnswer
extends java.lang.Object
implements org.kowari.query.Answer

An Answer backed by an Iterator of Maps and a List of variable names, useful for testing.

Field Summary

Fields inherited from interface org.kowari.query.Cursor

MANY, ONE, ZERO

Constructor Summary

SimpleAnswer(java.util.Iterator maps, java.util.List names)

Method Summary

void	beforeFirst()
java.lang.Object	clone()
void	close()
int	getColumnIndex(org.kowari.query.Variable column) Find the index of a variable.
int	getNumberOfVariables() Return the number of variables (columns).
java.lang.Object	getObject(int column)
java.lang.Object	getObject(java.lang.String columnName)
int	getRowCardinality()
long	getRowCount()
long	getRowUpperBound()
org.kowari.query.Variable[]	getVariables()
boolean	isUnconstrained()
boolean	next() Move to the next row.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleAnswer

public SimpleAnswer(java.util.Iterator maps,
                    java.util.List names)
             throws org.kowari.query.TuplesException

Throws:

org.kowari.query.TuplesException

Method Detail

getObject

public java.lang.Object getObject(int column)
                           throws org.kowari.query.TuplesException

Specified by:

getObject in interface org.kowari.query.Answer

Throws:

org.kowari.query.TuplesException

getObject

public java.lang.Object getObject(java.lang.String columnName)
                           throws org.kowari.query.TuplesException

Specified by:

getObject in interface org.kowari.query.Answer

Throws:

org.kowari.query.TuplesException

beforeFirst

public void beforeFirst()
                 throws org.kowari.query.TuplesException

Specified by:

beforeFirst in interface org.kowari.query.Cursor

Throws:

org.kowari.query.TuplesException

close

public void close()
           throws org.kowari.query.TuplesException

Specified by:

close in interface org.kowari.query.Cursor

Throws:

org.kowari.query.TuplesException

getColumnIndex

public int getColumnIndex(org.kowari.query.Variable column)
                   throws org.kowari.query.TuplesException

Find the index of a variable.

Specified by:

getColumnIndex in interface org.kowari.query.Cursor

Returns:

the ColumnIndex value

Throws:

org.kowari.query.TuplesException

getNumberOfVariables

public int getNumberOfVariables()

Return the number of variables (columns).

Specified by:

getNumberOfVariables in interface org.kowari.query.Cursor

getVariables

public org.kowari.query.Variable[] getVariables()

Specified by:

getVariables in interface org.kowari.query.Cursor

isUnconstrained

public boolean isUnconstrained()
                        throws org.kowari.query.TuplesException

Specified by:

isUnconstrained in interface org.kowari.query.Cursor

Throws:

org.kowari.query.TuplesException

getRowCount

public long getRowCount()
                 throws org.kowari.query.TuplesException

Specified by:

getRowCount in interface org.kowari.query.Cursor

Throws:

org.kowari.query.TuplesException

getRowUpperBound

public long getRowUpperBound()
                      throws org.kowari.query.TuplesException

Specified by:

getRowUpperBound in interface org.kowari.query.Cursor

Throws:

org.kowari.query.TuplesException

getRowCardinality

public int getRowCardinality()
                      throws org.kowari.query.TuplesException

Specified by:

getRowCardinality in interface org.kowari.query.Cursor

Throws:

org.kowari.query.TuplesException

next

public boolean next()
             throws org.kowari.query.TuplesException

Move to the next row. If no such row exists, return false and the current row becomes unspecified. The current row is unspecified when an instance is created. To specify the current row, the beforeFirst() method must be invoked.

Specified by:

next in interface org.kowari.query.Cursor

Returns:

whether a subsequent row exists.

Throws:

org.kowari.query.TuplesException

clone

public java.lang.Object clone()

Specified by:

clone in interface org.kowari.query.Answer

Overrides:

clone in class java.lang.Object