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/*-
 * ============LICENSE_START=======================================================
 * 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
 * distributed 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 the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */

package com.woorea.openstack.ceilometer;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import com.woorea.openstack.base.client.OpenStackRequest;

public abstract class QueriableCeilometerCommand<T,R> extends OpenStackRequest<R> {

    protected List<String> fields = new ArrayList<>();

    protected List<String> ops = new ArrayList<>();

    protected List<Serializable> values = new ArrayList<>();

    private T filter(String field, String op, Serializable value) {
        fields.add(field);
        ops.add(op);
        values.add(value);
        return (T) this;
    }

    public T lt(String field, Serializable value) {
        return filter(field, "lt", value);
    }

    public T le(String field, Serializable value) {
        return filter(field, "le", value);
    }

    public T eq(String field, Serializable value) {
        return filter(field, "eq", value);
    }

    public T ne(String field, Serializable value) {
        return filter(field, "ne", value);
    }

    public T ge(String field, Serializable value) {
        return filter(field, "ge", value);
    }

    public T gt(String field, Serializable value) {
        return filter(field, "gt", value);
    }

}