de.schwarzrot.data.access.support
Class AbstractFunctionCondtion

java.lang.Object
  de.schwarzrot.data.access.support.AbstractConditionElement
      de.schwarzrot.data.access.support.AbstractFunctionCondtion

All Implemented Interfaces:

ConditionElement

Direct Known Subclasses:

MaxConditionElement, MinConditionElement

public abstract class AbstractFunctionCondtion
extends AbstractConditionElement

create the condition string for queries, that want to refer to a function result i.e. max. value of given attribute. Such queries look like: select * from XXX where name = ( select (name) from XXX )

Author:

Reinhard Mantey

Field Summary

protected static String	CLOSE_OPERATOR
protected static String	OPEN_OPERATOR

Fields inherited from class de.schwarzrot.data.access.support.AbstractConditionElement

cnvFactory, EMPTY_STRING

Constructor Summary

AbstractFunctionCondtion()

AbstractFunctionCondtion(String name, Object value)

Method Summary

String	format(EntityDescriptor ed, PropertyInfo pi, DbUtil du, Object physValue) format the condition text with the given parameters
String	getCloseOperator() returns the operator, that closes a condition.
protected abstract String	getFunction()
String	getOpenOperator() returns the operator, that opens this condition.

Methods inherited from class de.schwarzrot.data.access.support.AbstractConditionElement

format, getName, getSeparator, getValue, setName, setValue

Methods inherited from class java.lang.Object

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

Field Detail

OPEN_OPERATOR

protected static final String OPEN_OPERATOR

See Also:

Constant Field Values

CLOSE_OPERATOR

protected static final String CLOSE_OPERATOR

See Also:

Constant Field Values

Constructor Detail

AbstractFunctionCondtion

public AbstractFunctionCondtion()

AbstractFunctionCondtion

public AbstractFunctionCondtion(String name,
                                Object value)

Method Detail

format

public String format(EntityDescriptor ed,
                     PropertyInfo pi,
                     DbUtil du,
                     Object physValue)

Description copied from interface: ConditionElement

format the condition text with the given parameters

Specified by:

format in interface ConditionElement

Overrides:

format in class AbstractConditionElement

Parameters:

ed - - the type of the involved entity

pi - - the description of the property

du - - the involved utility instance

physValue - - the physical values bound to this condition

Returns:

- the condition string ready to use in sql

getCloseOperator

public String getCloseOperator()

Description copied from interface: ConditionElement

returns the operator, that closes a condition. For simple conditions this call will return an empty string only.

Specified by:

getCloseOperator in interface ConditionElement

Overrides:

getCloseOperator in class AbstractConditionElement

Returns:

an operator

See Also:

ConditionElement.getOpenOperator()

getOpenOperator

public String getOpenOperator()

Description copied from interface: ConditionElement

returns the operator, that opens this condition. Simple conditions like 'Equal' only have a single operator, so it is returned as opening operator.

Returns:

an operator

See Also:

ConditionElement.getCloseOperator()

getFunction

protected abstract String getFunction()