PatientCountsDelegate.java

// Copyright 2015 The Project Buendia Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License.  You may obtain a copy
// of the License at: http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distrib-
// uted under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
// OR CONDITIONS OF ANY KIND, either express or implied.  See the License for
// specific language governing permissions and limitations under the License.

package org.projectbuendia.client.providers;

import android.content.ContentResolver;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;

import org.projectbuendia.client.sync.Database;
import org.projectbuendia.client.sync.QueryBuilder;
import org.projectbuendia.client.providers.Contracts.Table;

/** A {@link ProviderDelegate} that provides query access to the count of patients in each location. */
public class PatientCountsDelegate implements ProviderDelegate<Database> {

    @Override public String getType() {
        return Contracts.PatientCounts.GROUP_CONTENT_TYPE;
    }

    @Override public Cursor query(
        Database dbHelper, ContentResolver contentResolver, Uri uri, String[] projection,
        String selection, String[] selectionArgs, String sortOrder) {
        return new QueryBuilder(Table.PATIENTS)
            .where(selection, selectionArgs)
            .where(Contracts.Patients.LOCATION_UUID + " is not null")
            .groupBy(Contracts.Patients.LOCATION_UUID)
            .orderBy(sortOrder)
            .select(dbHelper.getReadableDatabase(),
                Contracts.Patients.ID,
                Contracts.Patients.LOCATION_UUID,
                "count(*) as " + Contracts.PatientCounts.PATIENT_COUNT);
    }

    @Override public Uri insert(
        Database dbHelper, ContentResolver contentResolver, Uri uri,
        ContentValues values) {
        throw new UnsupportedOperationException("Insert is not supported for URI '" + uri + "'.");
    }

    @Override public int bulkInsert(
        Database dbHelper, ContentResolver contentResolver, Uri uri,
        ContentValues[] values) {
        throw new UnsupportedOperationException(
            "Bulk insert is not supported for URI '" + uri + "'.");
    }

    @Override public int delete(
        Database dbHelper, ContentResolver contentResolver, Uri uri, String selection,
        String[] selectionArgs) {
        throw new UnsupportedOperationException("Delete is not supported for URI '" + uri + "'.");
    }

    @Override public int update(
        Database dbHelper, ContentResolver contentResolver, Uri uri,
        ContentValues values, String selection, String[] selectionArgs) {
        throw new UnsupportedOperationException("Update is not supported for URI '" + uri + "'.");
    }
}