com.ibm.fhir.persistence.jdbc.domain.SearchDataQuery Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of fhir-persistence-jdbc Show documentation

There is a newer version: 4.11.1

Show newest version

/*
 * (C) Copyright IBM Corp. 2021
 *
 * SPDX-License-Identifier: Apache-2.0
 */

package com.ibm.fhir.persistence.jdbc.domain;

import com.ibm.fhir.persistence.exception.FHIRPersistenceException;

/**
 * Domain model of the FHIR search context representing the query used
 * to perform the search operation in the database. The query built by
 * this class fetches the data and handles pagination
 */
public class SearchDataQuery extends SearchQuery {

    /**
     * Public constructor
     * @param resourceType
     */
    public SearchDataQuery(String resourceType) {
        super(resourceType);
    }

    @Override
    public  T getRoot(SearchQueryVisitor visitor) {
        return visitor.dataRoot(getRootResourceType());
    }

    @Override
    public  T visit(SearchQueryVisitor visitor) throws FHIRPersistenceException {

        // get the core data query
        T query = super.visit(visitor);

        // Join the core logical resource selection to the resource versions table
        query = visitor.joinResources(query);

        // now attach the requisite ordering and pagination clauses
        query = visitor.addSorting(query, "LR");
        query = visitor.addPagination(query);

        return query;
    }
}