Examples of org.apache.openjpa.kernel.exps.Subquery

org.apache.openjpa.kernel.exps.Subquery
Query value representing a subquery. @author Abe White @since 0.3.2


        // parse the subquery
        ParsedJPQL parsed = new ParsedJPQL(node.parser.jpql, node);


        ClassMetaData candidate = getCandidateMetaData(node);
        Subquery subq = factory.newSubquery(candidate, subclasses, alias);
        subq.setMetaData(candidate);


        contexts.push(new Context(parsed, subq));


        try {
            QueryExpressions subexp = getQueryExpressions();
            subq.setQueryExpressions(subexp);
            return subq;
        } finally {
            // remove the subquery parse context
            contexts.pop();
        }

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            candidate = fmd.getDefiningMetaData();


        setCandidate(candidate, alias);


        Context subContext = ctx();
        Subquery subquery = ctx().getSubquery();
        if (subquery == null){
            subquery = factory.newSubquery(candidate, true, alias);
            subContext.setSubquery(subquery);
        }
        else {
            subquery.setSubqAlias(alias);
        }


        Path subpath = factory.newPath(subquery);
        subpath.setSchemaAlias(path.getCorrelationVar());
        subpath.setMetaData(candidate);
        subquery.setMetaData(candidate);
        if (fmd.isElementCollection())
            exp = and(exp, bindVar);
        else
            exp = and(exp, factory.equal(path, subpath));

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        ParsedJPQL parsed = new ParsedJPQL(node.parser.jpql, node);
        Context subContext = new Context(parsed, null, ctx());
        contexts.push(subContext);


        ClassMetaData candidate = getCandidateMetaData(node);
        Subquery subq = subContext.getSubquery();
        if (subq == null) {
            subq = factory.newSubquery(candidate, subclasses, nextAlias());
            subContext.setSubquery(subq);
        }
        subq.setMetaData(candidate);
        
        // evaluate from clause for resolving variables defined in subquery
        JPQLNode from = node.getChild(1);
        subContext.from = evalFromClause(from, true);


        try {
            QueryExpressions subexp = getQueryExpressions();
            subq.setQueryExpressions(subexp);
            if (subexp.projections.length > 0)
                checkEmbeddable(subexp.projections[0]);
            return subq;
        } finally {
            // remove the subquery parse context

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            candidate = fmd.getDefiningMetaData();


        setCandidate(candidate, alias);


        Context subContext = ctx();
        Subquery subquery = ctx().getSubquery();
        if (subquery == null){
            subquery = factory.newSubquery(candidate, true, alias);
            subContext.setSubquery(subquery);
        }
        else {
            subquery.setSubqAlias(alias);
        }


        Path subpath = factory.newPath(subquery);
        subpath.setSchemaAlias(path.getCorrelationVar());
        subpath.setMetaData(candidate);
        subquery.setMetaData(candidate);
        if (fmd.isElementCollection())
            exp = and(exp, bindVar);
        else
            exp = and(exp, factory.equal(path, subpath));

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        ParsedJPQL parsed = new ParsedJPQL(node.parser.jpql, node);
        Context subContext = new Context(parsed, null, ctx());
        contexts.push(subContext);


        ClassMetaData candidate = getCandidateMetaData(node);
        Subquery subq = subContext.getSubquery();
        if (subq == null) {
            subq = factory.newSubquery(candidate, subclasses, nextAlias());
            subContext.setSubquery(subq);
        }
        subq.setMetaData(candidate);
        
        // evaluate from clause for resolving variables defined in subquery
        JPQLNode from = node.getChild(1);
        subContext.from = evalFromClause(from, true);


        try {
            QueryExpressions subexp = getQueryExpressions();
            subq.setQueryExpressions(subexp);
            if (subexp.projections.length > 0)
                checkEmbeddable(subexp.projections[0]);
            return subq;
        } finally {
            // remove the subquery parse context

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        if (c.ctx() != null && !alias.equalsIgnoreCase(c.ctx().schemaAlias)
            && (val = c.getRegisteredRootVariable(this)) != null) {
            // this is cross join
            var = factory.newPath(val);
        } else if (inSubquery(subquery)) {
            Subquery subQ = subquery.getSubQ();
            var = factory.newPath(subQ);
        } else {
            var = factory.newPath();
            var.setSchemaAlias(alias);
        }

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        if (parent == null && lctx.getSubselContexts() != null) {
            // this is the case subselect was created before parent got created
            List<Context> subselCtxs = lctx.getSubselContexts();
            for (Context subselCtx : subselCtxs) {
                Select subsel = (Select) subselCtx.getSelect();
                Subquery subquery = subselCtx.getSubquery();
                subsel.setParent(sel, subquery.getCandidateAlias());
            }
        }
        if (HasContainsExpressionVisitor.hasContains(exps.filter)) {
            sel.setHasSubselect(true);
        }

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            candidate = fmd.getDefiningMetaData();


        setCandidate(candidate, alias);


        Context subContext = ctx();
        Subquery subquery = ctx().getSubquery();
        if (subquery == null){
            subquery = factory.newSubquery(candidate, true, alias);
            subContext.setSubquery(subquery);
        }
        else {
            subquery.setSubqAlias(alias);
        }


        Path subpath = factory.newPath(subquery);
        subpath.setSchemaAlias(path.getCorrelationVar());
        subpath.setMetaData(candidate);
        subquery.setMetaData(candidate);
        if (fmd.isElementCollection())
            exp = and(exp, bindVar);
        else
            exp = and(exp, factory.equal(path, subpath));

View Full Code Here

        ParsedJPQL parsed = new ParsedJPQL(node.parser.jpql, node);
        Context subContext = new Context(parsed, null, ctx());
        contexts.push(subContext);


        ClassMetaData candidate = getCandidateMetaData(node);
        Subquery subq = subContext.getSubquery();
        if (subq == null) {
            subq = factory.newSubquery(candidate, subclasses, nextAlias());
            subContext.setSubquery(subq);
        }
        subq.setMetaData(candidate);
        
        // evaluate from clause for resolving variables defined in subquery
        JPQLNode from = node.getChild(1);
        subContext.from = evalFromClause(from, true);


        try {
            QueryExpressions subexp = getQueryExpressions();
            subq.setQueryExpressions(subexp);
            if (subexp.projections.length > 0)
                checkEmbeddable(subexp.projections[0]);
            return subq;
        } finally {
            // remove the subquery parse context

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        // parse the subquery
        ParsedJPQL parsed = new ParsedJPQL(node.parser.jpql, node);


        ClassMetaData candidate = getCandidateMetaData(node);
        Subquery subq = factory.newSubquery(candidate, subclasses, alias);
        subq.setMetaData(candidate);


        contexts.push(new Context(parsed, subq));


        try {
            QueryExpressions subexp = getQueryExpressions();
            subq.setQueryExpressions(subexp);
            return subq;
        } finally {
            // remove the subquery parse context
            contexts.pop();
        }

View Full Code Here

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Related Classes of org.apache.openjpa.kernel.exps.Subquery

org.apache.openjpa.jdbc.kernel.exps.SelectConstructor

org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder

org.apache.openjpa.persistence.criteria.RootImpl

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