Examples of javax.jdo.Query.declareVariables()

javax.jdo.Query.declareVariables()
Declare the unbound variables to be used in the query. Variables might be used in the filter, and these variables must be declared with their type. The unbound variable declaration is a String containing one or more unbound variable declarations separated with semicolons. It follows the syntax for local variables in the Java language. @param variables the variables separated by semicolons.


            query.declareImports( "import org.apache.maven.continuum.model.project.BuildDefinition" );


            query.setFilter( "this.buildDefinitions.contains(buildDef) && buildDef.defaultForProject == true" );


            query.declareVariables( "BuildDefinition buildDef" );


            query.setResult( "this.id, buildDef.id" );


            List result = (List) query.execute();

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            query.declareParameters( "int projectGroupId" );


            query.setFilter(
                "this.id == projectGroupId && this.buildDefinitions.contains(buildDef) && buildDef.defaultForProject == true" );


            query.declareVariables( "BuildDefinition buildDef" );


            query.setResult( "buildDef" );


            List<BuildDefinition> result = (List<BuildDefinition>) query.execute( projectGroupId );

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            Query query = pm.newQuery();
            query.setClass(Department.class);
            query.setCandidates(pm.getExtent(Department.class, false));
            query.declareImports("import org.apache.jdo.tck.pc.company.Employee");
            query.declareVariables("Employee e" );
            query.setFilter("employees.contains(e) && e.firstname==\"Michael\"" );
            Object results = query.execute();


            // Just check whether query with import declaration compiles

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            Query query = pm.newQuery();
            query.setClass(Company.class);
            query.setCandidates(pm.getExtent(Company.class, false));
            query.declareImports("import org.apache.jdo.tck.pc.company.Employee; import org.apache.jdo.tck.pc.company.Department");
            query.declareVariables("Department d; Employee e" );
            query.setFilter("departments.contains(d) && (d.employees.contains(e) && e.firstname==\"Michael\")");
            Object results = query.execute();


            // Just check whether query with import declarations compiles

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            tx.begin();


            Query query = pm.newQuery();
            query.setClass(Department.class);
            query.setCandidates(pm.getExtent(Department.class, false));
            query.declareVariables("org.apache.jdo.tck.pc.company.Employee e" );
            query.setFilter("employees.contains(e) && e.firstname==\"Michael\"" );
            Object results = query.execute();


            // Just check whether query compiles

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            tx.begin();


            Query query = pm.newQuery();
            query.setClass(Department.class);
            query.setCandidates(pm.getExtent(Department.class, false));
            query.declareVariables("org.apache.jdo.tck.pc.company.Employee e; org.apache.jdo.tck.pc.company.Project p;");
            query.setFilter("employees.contains(e) && (e.projects.contains(p) && p.projid == 1)");
            Object results = query.execute();


            // Just check whether query compiles

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        query.setUnique(false);
        query.setResult(null);
        query.setResultClass(null);
        query.setClass(FullTimeEmployee.class);
        query.setFilter(null);
        query.declareVariables(null);
        query.declareParameters(null);
        query.declareImports(null);
        query.setGrouping(null);
        query.setOrdering(null);
        query.setRange(null);

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        }
        if (this.filter != null) {
            query.setFilter(this.filter);
        }
        if (this.variables != null) {
            query.declareVariables(this.variables);
        }
        if (this.parameters != null) {
            query.declareParameters(this.parameters);
        }
        if (this.imports != null ) {

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            tx.begin();
            Query query = pm.newQuery();
            query.setClass(clazz);
            query.setCandidates(pm.getExtent(clazz, false));
            try {
                query.declareVariables( "org.apache.jdo.tck.pc.company.Person reviewers;" );
                query.setFilter( "reviewers.contains(reviewers)" );
                Object results = query.execute();
                fail(ASSERTION_FAILED,
                     "Variable declaration \"Person reviewers\" did not hide field Person.reviewers");
            }

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        try {
            tx.begin();
            Query query = pm.newQuery();
            query.setClass(clazz);
            query.setCandidates(pm.getExtent(clazz, false));
            query.declareVariables( "org.apache.jdo.tck.pc.company.Person reviewers;" );
            query.setFilter( "this.reviewers.contains(reviewers) && reviewers.firstname==\"brazil\"" );
            Object results = query.execute();
        } 
        finally {
            if (tx.isActive())

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