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Re: [eclipselink-users] How to add restrictions dinamically to criteriaBuilder
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The key to creating a dynamic restriction is to build the restriction
first then add it as a whole to the CriteriaQuery. Your code should be
changed to look as follows.
Predicate restriction = qb.conjunction(); // assume starting with True.
if (a) {
restriction = qb.and(restriction, qb.equal(X, Y));
}
if (b) {
restriction = qb.and(restriction, qb.equal(Z, C));
}
criteriaQuery.where(restriction);
--Gordon
Diego Coronel wrote:
Hi,
Im trying to dinamic add restrictions to criteria, but i dont know how to
do it.. all samples in jpa-reference just always add it on
criteriaQuery.where(xxxx,yyy,zzz);
Can you tell me how to do something like:
if ( a ) {
criteriaQuery.addRestriction( qb.equal( X, Y ) );
}
if ( b ) {
criteriaQuery.addRestriction( qb.equal( Z, C ) );
}
i wanna to construct my query restrictions in runtime. just adding it when
necessary.
... sry about english.