com.zentense.step2.view
Class VectorRowView

java.lang.Object
  com.zentense.step2.view.View
      com.zentense.step2.view.RowView
          com.zentense.step2.view.VectorRowView

public class VectorRowView
extends RowView

This class implements a Vector of rows. Each row is a Hashtable.

Author:

kurt

Nested Class Summary

protected class

VectorRowView.ComparableComparer Performs comparisons over a vector of rows (used for sorting them)

Nested classes/interfaces inherited from class com.zentense.step2.view.View

View.Empty

Field Summary

protected int	ptr Number of row being read.
protected java.util.Vector	res Vector that holds all rows

Fields inherited from class com.zentense.step2.view.RowView

row

Fields inherited from class com.zentense.step2.view.View

EMPTY

Constructor Summary

VectorRowView()
Creates an view with no rows

VectorRowView(java.util.Vector v)
Constructor from a vector

VectorRowView(VectorRowView vrv)
Constructor from another vector row view

Method Summary

void	add(View v) Appends the content of the given view at the end of this view.
void	addRow(java.util.Hashtable row) Appends a row to this view
void	addRow(java.lang.String[] cols, java.lang.Object[] values) Appends a row to this view.
java.lang.Object	get(int idx, java.lang.String colName) Gets a value
static java.lang.Object	get(java.util.Vector v, int idx, java.lang.String colName) Gets a value from a vector of rows
int	getCount() Gets results total size
double	getDouble(int idx, java.lang.String colName) Gets value as a double
static double	getDouble(java.util.Vector v, int idx, java.lang.String colName) Gets double value from a vector of rows
int	getInt(int idx, java.lang.String colName) Gets a value as integer
static int	getInt(java.util.Vector v, int idx, java.lang.String colName) Gets integer value from a vector of rows
int	getOrdinal() Gets the current position of this view.
java.util.Vector	getResults() Gets results
java.util.Hashtable	getRowAt(int idx) Gets a row
int	getSize() Gets results size
int	getStart() Returns the first visible row in this view.
void	insertRowAt(java.util.Hashtable row, int pos) Inserts a row
boolean	next() Advances the view to the next row.
void	open() Position the view before the first visible row
VectorRowView	order(java.lang.String colname) Sorts the view
void	put(int idx, java.lang.String colName, java.lang.Object obj) Puts a value
void	removeRow(int idx) Removes a row
VectorRowView	reverse() Reverses the results
void	setPageBounds(int begin, int step) Sets page bounds.
void	setPosition(int pos) Moves to another row in view
void	setResults(java.util.Vector res) Sets results
void	setResults(VectorRowView vrv) Sets results
java.lang.String	toString() Gives a string representation of this object
java.util.Vector	toVectorRow()

Methods inherited from class com.zentense.step2.view.RowView

get, getCols, getRow, isEmpty, set, setRow, setRow, setRowOp

Methods inherited from class com.zentense.step2.view.View

asDelegated, asDelegatedResultSet, asResultSet, fillFromRow, fillRowFromRequest, first, getBool, getCachedClone, getColsAsView, getDouble, getIndent, getInt, getRow, getSum, insertRow, randomPosition, setPageBounds, setPageBounds, setPageBounds, updateRow

Methods inherited from class java.lang.Object

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

Field Detail

ptr

protected int ptr

Number of row being read. This is used by getOrdinal

res

protected java.util.Vector res

Vector that holds all rows

Constructor Detail

VectorRowView

public VectorRowView()

Creates an view with no rows

VectorRowView

public VectorRowView(VectorRowView vrv)

Constructor from another vector row view

Parameters:

vrv - A vector row view

VectorRowView

public VectorRowView(java.util.Vector v)

Constructor from a vector

Parameters:

v - A vector of rows

Method Detail

setResults

public void setResults(java.util.Vector res)

Sets results

Parameters:

res - A vector of rows

setResults

public void setResults(VectorRowView vrv)

Sets results

Parameters:

vrv - A vector row view

getResults

public final java.util.Vector getResults()

Gets results

Returns:

A vector of rows

getStart

public int getStart()

Description copied from class: View

Returns the first visible row in this view.

Overrides:

getStart in class View

See Also:

View#setPageBounds(Integer, Integer)

getSize

public final int getSize()

Gets results size

Overrides:

getSize in class RowView

Returns:

Number of rows

getCount

public int getCount()

Description copied from class: View

Gets results total size

Overrides:

getCount in class View

Returns:

Number of results in view (even outside page).

getOrdinal

public final int getOrdinal()

Description copied from class: View

Gets the current position of this view. First is 0

Overrides:

getOrdinal in class View

setPosition

public final void setPosition(int pos)

Description copied from class: View

Moves to another row in view

Overrides:

setPosition in class View

open

public final void open()
                throws java.lang.Exception

Description copied from class: View

Position the view before the first visible row

Overrides:

open in class View

Throws:

java.lang.Exception

next

public final boolean next()
                   throws java.lang.Exception

Description copied from class: View

Advances the view to the next row. Returns true while more rows are available

Overrides:

next in class View

Throws:

java.lang.Exception

setPageBounds

public final void setPageBounds(int begin,
                                int step)
                         throws java.sql.SQLException

Description copied from class: View

Sets page bounds. The page begins at row 'begin' and has a size of 'step' rows. After this method is called only the rows inside the page will be shown. Not all the views support this method.

Overrides:

setPageBounds in class View

Parameters:

begin - First row in page

step - Number of rows in page

Throws:

java.sql.SQLException

put

public void put(int idx,
                java.lang.String colName,
                java.lang.Object obj)

Puts a value

Parameters:

idx - Row index

colName - Column name

obj - New value

get

public final java.lang.Object get(int idx,
                                  java.lang.String colName)

Gets a value

Parameters:

idx - Row index

colName - Column name

Returns:

Value

getInt

public final int getInt(int idx,
                        java.lang.String colName)

Gets a value as integer

Parameters:

idx - Row index

colName - Column name

Returns:

Value as integer

getDouble

public final double getDouble(int idx,
                              java.lang.String colName)

Gets value as a double

Parameters:

idx - Row index

colName - Column name

Returns:

Value as a double

get

public static final java.lang.Object get(java.util.Vector v,
                                         int idx,
                                         java.lang.String colName)

Gets a value from a vector of rows

Parameters:

v - Vector of rows

idx - Row index

colName - Column name

Returns:

Value

getInt

public static final int getInt(java.util.Vector v,
                               int idx,
                               java.lang.String colName)

Gets integer value from a vector of rows

Parameters:

v - Vector of rows

idx - Row index

colName - Column name

Returns:

Integer value

getDouble

public static final double getDouble(java.util.Vector v,
                                     int idx,
                                     java.lang.String colName)

Gets double value from a vector of rows

Parameters:

v - Vector of rows

idx - Row index

colName - Column name

Returns:

Value

reverse

public final VectorRowView reverse()

Reverses the results

Returns:

this VectorRowView

order

public final VectorRowView order(java.lang.String colname)

Sorts the view

Parameters:

colname - Column name used for sorting

Returns:

This vector row view

toString

public java.lang.String toString()

Gives a string representation of this object

Overrides:

toString in class RowView

Returns:

A string

toVectorRow

public java.util.Vector toVectorRow()
                             throws java.lang.Exception

Throws:

java.lang.Exception

insertRowAt

public final void insertRowAt(java.util.Hashtable row,
                              int pos)

Inserts a row

Parameters:

row - Row to be inserted

pos - Index row

addRow

public final void addRow(java.util.Hashtable row)

Appends a row to this view

Parameters:

row - Row to be appended

addRow

public final void addRow(java.lang.String[] cols,
                         java.lang.Object[] values)

Appends a row to this view. Row is constructed from arrays of names and values.

Parameters:

cols - Array of column names

values - Array of values

add

public final void add(View v)
               throws java.lang.Exception

Appends the content of the given view at the end of this view. Columns can or cannot match, and repeated rows will also be appended as anything is checked..

Parameters:

v - View to be appended

Throws:

java.lang.Exception

getRowAt

public final java.util.Hashtable getRowAt(int idx)

Gets a row

Parameters:

idx - Row index

Returns:

The row

removeRow

public final void removeRow(int idx)

Removes a row

Parameters:

idx - Row index