er.extensions.eof

Class ERXKeyValueBinding

java.lang.Object

er.extensions.eof.ERXKeyValueBinding

All Implemented Interfaces:

ERXSQLBinding

public class ERXKeyValueBinding
extends Object
implements ERXSQLBinding

This class models an SQL binding based on a model keypath/value pair.

The keypath refers to the base entity of the SQL expression. As an example, if the base entity is Person, then a binding for person's first name would have a keypath of "firstName". The name of the person's department would be "department.name". The keypath is used to inspect the model and obtain the correct EOAttribute used to handle SQL generation (value type, conversion, etc).

Constructor Summary

Constructors

Constructor and Description
ERXKeyValueBinding(String keyPath, Object value) Obtains new binding wrapper for passed in EOF key and value

Method Summary

Modifier and Type	Method and Description
String	keyPath() The EOF key of the wrapped binding
String	sqlStringForBindingOnExpression(com.webobjects.eoaccess.EOSQLExpression expression) Registers the binding on a given SQL expression, and obtains the binding placeholder string for the binding value.
Object	value() The value of the binded variable

Methods inherited from class java.lang.Object

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

Constructor Detail

ERXKeyValueBinding

public ERXKeyValueBinding(String keyPath,
                          Object value)

Obtains new binding wrapper for passed in EOF key and value

Parameters:

keyPath - The EOF key

value - The value to bind

Method Detail

keyPath

public String keyPath()

The EOF key of the wrapped binding

Returns:

The EOF key of the wrapped binding

value

public Object value()

The value of the binded variable

Returns:

The value of the binded variable

sqlStringForBindingOnExpression

public String sqlStringForBindingOnExpression(com.webobjects.eoaccess.EOSQLExpression expression)

Description copied from interface: ERXSQLBinding

Registers the binding on a given SQL expression, and obtains the binding placeholder string for the binding value.

Specified by:

sqlStringForBindingOnExpression in interface ERXSQLBinding

Parameters:

expression - EOSQLExpression being built

Returns:

the SQL placeholder string for the used DB, usually "?"