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 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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        }
        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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            query.setFilter( constraint.getFilter() );
        }


        if ( constraint.getVariables() != null )
        {
            query.declareVariables( StringUtils.join( constraint.getVariables(), ";  " ) );
        }


        if ( constraint.getSortColumn() != null )
        {
            String ordering = constraint.getSortColumn();

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            query.setFilter( constraint.getFilter() );
        }


        if ( constraint.getVariables() != null )
        {
            query.declareVariables( StringUtils.join( constraint.getVariables(), ";  " ) );
        }


        if ( constraint.getSortColumn() != null )
        {
            String ordering = constraint.getSortColumn();

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            query.declareParameters( "int scheduleId" );


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


            query.declareVariables( "BuildDefinition buildDef" );


            query.setFilter( "buildDefinitions.contains(buildDef) && buildDef.schedule.id == scheduleId" );


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

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            query.declareParameters( "int scheduleId" );


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


            query.declareVariables( "BuildDefinition buildDef" );


            query.setFilter( "buildDefinitions.contains(buildDef) && buildDef.schedule.id == scheduleId" );


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

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            query.declareParameters( "int projectId" );


            query.setFilter(
                "project.id == projectId && project.buildDefinitions.contains(this) && this.defaultForProject == true" );


            query.declareVariables( "Project project" );


            query.setResult( "this" );


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

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            query.setFilter( constraint.getFilter() );
        }


        if ( constraint.getVariables() != null )
        {
            query.declareVariables( StringUtils.join( constraint.getVariables(), ";  " ) );
        }


        if ( constraint.getSortColumn() != null )
        {
            String ordering = constraint.getSortColumn();

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