org.josql.filters

类 DefaultObjectFilter

java.lang.Object

org.josql.filters.AbstractJoSQLFilter

org.josql.filters.DefaultObjectFilter

直接已知子类:

JoSQLLogRecordFilter

public class DefaultObjectFilter
extends AbstractJoSQLFilter

A general purpose object filter that uses a JoSQL statement to provide the filtering. The value returned by the accept(Object) method is determined by executing the JoSQL WHERE clause passed in. A "wrapper" is created around the WHERE clause to make it a fully-formed JoSQL statement.

字段概要

从类继承的字段 org.josql.filters.AbstractJoSQLFilter

badQuery, exp, q

构造器概要

构造器

构造器和说明
DefaultObjectFilter(Query q)
DefaultObjectFilter(String w, Class c) Init this filter with the where clause, note the class specified will be used in the FROM clause.

方法概要

限定符和类型	方法和说明
boolean	accept(Object o) Apply the WHERE clause of the statement to the object passed in.
Class	getExpectedClass() Get the class the Query expects to operate on.

从类继承的方法 org.josql.filters.AbstractJoSQLFilter

clearException, getException, getQuery, setQuery, setQuery

从类继承的方法 java.lang.Object

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

构造器详细资料

DefaultObjectFilter

public DefaultObjectFilter(String w,
                           Class c)
                    throws QueryParseException

Init this filter with the where clause, note the class specified will be used in the FROM clause.

参数:

w - The where clause.

c - The class of the objects to filter.

抛出:

QueryParseException - If there is an issue with the parsing of the query.

DefaultObjectFilter

public DefaultObjectFilter(Query q)
                    throws IllegalStateException,
                           QueryParseException

抛出:

IllegalStateException

QueryParseException

方法详细资料

accept

public boolean accept(Object o)

Apply the WHERE clause of the statement to the object passed in. If an exception is thrown by the execution of the WHERE clause the Query is marked as "dirty" and the where clause is no longer executed on the passed in objects (since it is likely that the WHERE clause will fail for all objects). You can get access to exception by using: AbstractJoSQLFilter.getException().

指定者:

accept 在类中 AbstractJoSQLFilter

参数:

o - The object to evaluate the WHERE on.

返回:

true if the WHERE clause evaluates to true.

getExpectedClass

public Class getExpectedClass()

Get the class the Query expects to operate on.

指定者:

getExpectedClass 在类中 AbstractJoSQLFilter

返回:

The class.