JPAExpressions

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사용법

@Override  
public Integer selectCount(ProcessHistorySearchForm processHistorySearchForm) {  
    return queryFactory.select(qProcessVersion.processVersionSequence.count())  
            .from(qProcessVersion)  
            .where(  
                    qProcessVersion.processSequence.eq(JPAExpressions.select(qProcessVersion.processSequence)  
                            .from(qProcessVersion)  
                            .where(qProcessVersion.processVersionSequence.eq(processHistorySearchForm.getProcessVersionSequence()))),  
                    qProcessVersion.removeYn.eq("N"),  
                    BooleanExpressionCreator.stringEqualsIfExist(qProcessVersion.registerId, processHistorySearchForm.getRegistorId()),  
                    BooleanExpressionCreator.dateBetweenIfStartEndExist(qProcessVersion.registerDateTime, processHistorySearchForm.getStartDate(), processHistorySearchForm.getEndDate())  
            )  
            .orderBy(qProcessVersion.majorVersion.desc(), qProcessVersion.minorVersion.desc())  
            .fetchOne()  
            .intValue();  
}

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연결문서