org.openanzo.sqlscribe
Class Column

java.lang.Object
  org.openanzo.sqlscribe.Column

All Implemented Interfaces:

java.lang.Comparable<Column>

public class Column
extends java.lang.Object
implements java.lang.Comparable<Column>

Represents a relational database table column for use in the query builder framework.

Author:

Joe Betz

Constructor Summary

Column(ITable table, java.lang.String name)
Create new Column with a name and alias

Column(ITable table, java.lang.String name, java.lang.String alias)
Create new Column with a name and alias

Method Summary

int	compareTo(Column column)
boolean	equals(java.lang.Object object)
java.lang.String	getAlias() Get the alias of this column
java.lang.String	getName() Get the name of this column
java.lang.String	getQualifiedName() Return the qualified name of the column, ie tableAlias.name
java.lang.String	getSelectionName() Get the AS selection text for this column, ie: name AS alias
ITable	getTable() Get the table to which this column belongs
int	hashCode()
Column	reAlias(ITable newTable, java.lang.String newAlias) Clone this column using a new table and alias
java.lang.String	toString()
void	writeQualifiedName(java.lang.StringBuffer buf) Append the qualified name of the column, ie tableAlias.name to a string buffer
void	writeSelectionName(java.lang.StringBuffer buf) Append the AS selection text for this column, ie: name AS alias

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Column

public Column(ITable table,
              java.lang.String name,
              java.lang.String alias)

Create new Column with a name and alias

Parameters:

table - table to which this column belongs

name - name of the column

alias - alias to use to reference column in queries

Column

public Column(ITable table,
              java.lang.String name)

Create new Column with a name and alias

Parameters:

table - table to which this column belongs

name - name of the column

Method Detail

getQualifiedName

public java.lang.String getQualifiedName()

Return the qualified name of the column, ie tableAlias.name

Returns:

the qualified name of the column

writeQualifiedName

public void writeQualifiedName(java.lang.StringBuffer buf)

Append the qualified name of the column, ie tableAlias.name to a string buffer

Parameters:

buf - buffer to which name is appended

getSelectionName

public java.lang.String getSelectionName()

Get the AS selection text for this column, ie: name AS alias

Returns:

Get the AS selection text for this column

writeSelectionName

public void writeSelectionName(java.lang.StringBuffer buf)

Append the AS selection text for this column, ie: name AS alias

Parameters:

buf - buffer to which text is appended

getName

public java.lang.String getName()

Get the name of this column

Returns:

name of this column

getAlias

public java.lang.String getAlias()

Get the alias of this column

Returns:

the alias of this column

getTable

public ITable getTable()

Get the table to which this column belongs

Returns:

the table to which this column belongs

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

reAlias

public Column reAlias(ITable newTable,
                      java.lang.String newAlias)

Clone this column using a new table and alias

Parameters:

newTable - table where to which the cloned column belongs

newAlias - alias for the new column

Returns:

new Column using a new table and alias

equals

public boolean equals(java.lang.Object object)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

compareTo

public int compareTo(Column column)

Specified by:

compareTo in interface java.lang.Comparable<Column>