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javatools.db
Class DbColumn  

java.lang.Object
  javatools.db.DbExpr
      javatools.db.DbColumn

All Implemented Interfaces:

DbTableUser

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public class DbColumn

extends DbExpr

A class that represents a particular column within a particular DbTable. Based upon class DbColumn by Chris Bitmead.

Version:

0.0.1

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Field Summary
(package private)  int	index           The position between the fields.
(package private)  DbAbstractTable	table           The indexed table.

 

Fields inherited from class javatools.db.DbExpr

db

 

Constructor Summary

DbColumn(DbAbstractTable table, int index)           Creates a new DbColumn.

 

Method Summary
boolean	equals(java.lang.Object o)           Checks if a column equals another column.
int	getIndex()           Returns the index of the column among the fields of the table.
java.lang.String	getName()           Returns the column name.
java.lang.String	getQueryString()           Returns the query string related to this column.
int	getSize()           Returns the display size of this column.
DbExpr	getSubExpr(DbColumn[] cols)           Currently unused.
int	setSqlValues(java.sql.PreparedStatement ps, int i)           Sets, in a prepared statement, the value related to this column, that will be used, e.g., in an INSERT operation.
DbExpr	substituteColumn(DbColumn oldCol, DbColumn newCol)           Currently unused.
java.lang.String	toString()           The fully qualified name of this column.
void	usesTables(java.util.Set c)           Adds to the set, the currently indexed table.

 

Methods inherited from class javatools.db.DbExpr

and, containsAllStrings, containsAllStrings, count, dateTrunc, equal, getString, greaterThan, greaterThanOrEqual, in, in, isNotNull, isNull, lessThan, lessThanOrEqual, like, lower, max, min, notEqual, notIn, notIn, or, setSqlValue, upper, usesTables

 

Methods inherited from class java.lang.Object

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

 

Field Detail

table

DbAbstractTable table

The indexed table.

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index

int index

The position between the fields.

Constructor Detail

DbColumn

public DbColumn(DbAbstractTable table,
                int index)

Creates a new DbColumn.

Method Detail

getQueryString

public java.lang.String getQueryString()

Returns the query string related to this column.

Specified by:

getQueryString in class DbExpr

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getName

public java.lang.String getName()

Returns the column name.

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setSqlValues

public int setSqlValues(java.sql.PreparedStatement ps,
                        int i)
                 throws DbException

Sets, in a prepared statement, the value related to this column, that will be used, e.g., in an INSERT operation. Anyway it is obscure...

Specified by:

setSqlValues in class DbExpr

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getSize

public int getSize()

Returns the display size of this column.

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getIndex

public int getIndex()

Returns the index of the column among the fields of the table.

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equals

public boolean equals(java.lang.Object o)

Checks if a column equals another column.

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toString

public java.lang.String toString()

The fully qualified name of this column.

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usesTables

public void usesTables(java.util.Set c)

Adds to the set, the currently indexed table.

Specified by:

usesTables in interface DbTableUser

Overrides:

usesTables in class DbExpr

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getSubExpr

public DbExpr getSubExpr(DbColumn[] cols)
                  throws DbException

Currently unused. It should take a sub-expression containing the specified columns.

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substituteColumn

public DbExpr substituteColumn(DbColumn oldCol,
                               DbColumn newCol)
                        throws DbException

Currently unused. It should replace oldCol with newCol.

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> javatools >> [ db overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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