gov.usda.gdpc.database
Class ConstantDatabaseMapping

java.lang.Object
  gov.usda.gdpc.database.AbstractDatabaseMapping
      gov.usda.gdpc.database.ConstantDatabaseMapping

All Implemented Interfaces:

DatabaseMapping

public class ConstantDatabaseMapping

extends AbstractDatabaseMapping

Author:

terryc

Field Summary

protected java.lang.Object

myConstant

Fields inherited from class gov.usda.gdpc.database.AbstractDatabaseMapping

myProperty

Constructor Summary

ConstantDatabaseMapping(Property property, java.lang.Object constant)
ConstantDatabaseMapping Constructor.

Method Summary

boolean	equals(java.lang.Object obj) This determines if two database mapping are equal.
java.lang.Object	getConstant() Return the constant.
SQLStatements	getDistinctSQL() Returns the SQL statements required to get the distinct values for the property associated with this mapping.
java.util.List	getJavaObjects(java.sql.ResultSet rs, ExtraInfo extraInfo) This only uses the result set to determine the number of times to add the constant to the list.
java.lang.String	getSQLSubString(Filter filter, ExtraInfo extraInfo) Gets the SQL sub-string based on the given filter.
java.lang.String	toString() Returns the string representation of this database mapping.

Methods inherited from class gov.usda.gdpc.database.AbstractDatabaseMapping

getProperty

Methods inherited from class java.lang.Object

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

Field Detail

myConstant

protected final java.lang.Object myConstant

Constructor Detail

ConstantDatabaseMapping

public ConstantDatabaseMapping(Property property,
                               java.lang.Object constant)

ConstantDatabaseMapping Constructor. This represents a constant mapping which

Parameters:

property - associated property. null is creating a mapping to use for matching against a property map.

constant - constant

Method Detail

getConstant

public java.lang.Object getConstant()

Return the constant.

Returns:

constant

getSQLSubString

public java.lang.String getSQLSubString(Filter filter,
                                        ExtraInfo extraInfo)

Gets the SQL sub-string based on the given filter. This always returns null since the constant does not need to be retrieved from the database.

Specified by:

getSQLSubString in interface DatabaseMapping

Overrides:

getSQLSubString in class AbstractDatabaseMapping

Parameters:

filter - filter

extraInfo - this is not used by this database mapping

Returns:

null

getJavaObjects

public java.util.List getJavaObjects(java.sql.ResultSet rs,
                                     ExtraInfo extraInfo)
                              throws java.sql.SQLException

This only uses the result set to determine the number of times to add the constant to the list. The constant is added one time for each row in the result set.

Specified by:

getJavaObjects in interface DatabaseMapping

Overrides:

getJavaObjects in class AbstractDatabaseMapping

Parameters:

rs - result set

extraInfo - this is not used by this database mapping

Returns:

list of converted data

Throws:

java.sql.SQLException

getDistinctSQL

public SQLStatements getDistinctSQL()

Returns the SQL statements required to get the distinct values for the property associated with this mapping.

Specified by:

getDistinctSQL in interface DatabaseMapping

Overrides:

getDistinctSQL in class AbstractDatabaseMapping

Returns:

SQL statements and corresponding extra information

equals

public boolean equals(java.lang.Object obj)

This determines if two database mapping are equal. In this case, two constant database mappings are equal if the constant value are the equal according to the equal() method.

Parameters:

obj - object to test

Returns:

true if equal

toString

public java.lang.String toString()

Returns the string representation of this database mapping.

Overrides:

toString in class AbstractDatabaseMapping

Returns:

string representation