com.pavelvlasov.sql
Class ConstructorProjector

java.lang.Object
  com.pavelvlasov.sql.BaseReflectionProjector
      com.pavelvlasov.sql.ConstructorProjector

All Implemented Interfaces:

Projector

public class ConstructorProjector

extends BaseReflectionProjector

implements Projector

This projector constructs objects using database field values

Version:

$Revision: 1.2 $

Author:

Pavel Vlasov

Nested Class Summary

static class

ConstructorProjector.ColumnName

Constructor Summary

ConstructorProjector(java.lang.reflect.Constructor constructor, java.util.Map typeMap)
Use constructor for positioned projection.

ConstructorProjector(java.lang.reflect.Constructor constructor, java.lang.Object[] args, java.util.Map typeMap)
Use this constructor if target constructor shall take not only values from database fields as parameter, but other objects as well.

ConstructorProjector(java.lang.reflect.Constructor constructor, java.lang.String[] columnNames, java.util.Map typeMap)
Use this constructor if only database fields values are used as target constructor parameters.

Method Summary

java.lang.Object

project(java.sql.ResultSet rs) Creates object from ResultSet data

Methods inherited from class com.pavelvlasov.sql.BaseReflectionProjector

accessorName, getColumn, getColumn, mutatorName, propertyName

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstructorProjector

public ConstructorProjector(java.lang.reflect.Constructor constructor,
                            java.lang.Object[] args,
                            java.util.Map typeMap)

Use this constructor if target constructor shall take not only values from database fields as parameter, but other objects as well.

Parameters:

constructor - Constructor to instantiate object.

args - Constructor arguments. Arguments of type ConstructorProjector.ColumnName will be replaced with values from corresponding fields from the database.

typeMap - See ResultSet.getObject(java.lang.String, java.util.Map). Can be null.

ConstructorProjector

public ConstructorProjector(java.lang.reflect.Constructor constructor,
                            java.lang.String[] columnNames,
                            java.util.Map typeMap)

Use this constructor if only database fields values are used as target constructor parameters.

Parameters:

constructor - Constructor to instantiate object

columnNames - Names of columns that shall be passed as parameters to constructor.

typeMap - See ResultSet.getObject(java.lang.String, java.util.Map). Can be null.

ConstructorProjector

public ConstructorProjector(java.lang.reflect.Constructor constructor,
                            java.util.Map typeMap)

Use constructor for positioned projection. Column values will be passed to as constructor arguments according to their position.

Parameters:

constructor -

typeMap -

Method Detail

project

public java.lang.Object project(java.sql.ResultSet rs)
                         throws java.sql.SQLException

Description copied from interface: Projector

Creates object from ResultSet data

Specified by:

project in interface Projector

Parameters:

rs - ResultSet

Returns:

Constructed object

Throws:

java.sql.SQLException