com.avaje.ebeaninternal.server.expression

Class SimpleExpression

java.lang.Object

com.avaje.ebeaninternal.server.expression.AbstractExpression

com.avaje.ebeaninternal.server.expression.SimpleExpression

All Implemented Interfaces:

Expression, SpiExpression, Serializable

public class SimpleExpression
extends AbstractExpression

See Also:

Serialized Form

Field Summary

Fields inherited from class com.avaje.ebeaninternal.server.expression.AbstractExpression

propName

Constructor Summary

Constructors

Constructor and Description
SimpleExpression(String propertyName, com.avaje.ebeaninternal.server.expression.SimpleExpression.Op type, Object value)

Method Summary

Methods

Modifier and Type	Method and Description
void	addBindValues(SpiExpressionRequest request) Add the parameter values to be set against query.
void	addSql(SpiExpressionRequest request) Add some sql to the query.
Object	getValue()
boolean	isOpEquals()
void	queryAutoFetchHash(HashQueryPlanBuilder builder) Based on the type and propertyName.
int	queryBindHash() Return the hash value for the values that will be bound.
void	queryPlanHash(BeanQueryRequest<?> request, HashQueryPlanBuilder builder) Calculate a hash value for the expression.

Methods inherited from class com.avaje.ebeaninternal.server.expression.AbstractExpression

containsMany, getElProp, getPropertyName

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleExpression

public SimpleExpression(String propertyName,
                com.avaje.ebeaninternal.server.expression.SimpleExpression.Op type,
                Object value)

Method Detail

isOpEquals

public boolean isOpEquals()

addBindValues

public void addBindValues(SpiExpressionRequest request)

Description copied from interface: SpiExpression

Add the parameter values to be set against query. For each ? place holder there should be a corresponding value that is added to the bindList.

Parameters:

request - the associated request.

addSql

public void addSql(SpiExpressionRequest request)

Description copied from interface: SpiExpression

Add some sql to the query.

This will contain ? as a place holder for each associated bind values.

The 'sql' added to the query can contain object property names rather than db tables and columns. This 'sql' is later parsed converting the logical property names to their full database column names.

Parameters:

request - the associated request.

queryAutoFetchHash

public void queryAutoFetchHash(HashQueryPlanBuilder builder)

Based on the type and propertyName.

queryPlanHash

public void queryPlanHash(BeanQueryRequest<?> request,
                 HashQueryPlanBuilder builder)

Description copied from interface: SpiExpression

Calculate a hash value for the expression. This includes the expression type and property but should exclude the bind values.

This is used where queries are the same except for the bind values, in which case the query execution plan can be reused.

queryBindHash

public int queryBindHash()

Description copied from interface: SpiExpression

Return the hash value for the values that will be bound.

getValue

public Object getValue()