/*
 * Copyright 2021-2023 the original author or 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
 *
 *      https://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.
 */
package org.springframework.data.r2dbc.dialect;

import org.springframework.r2dbc.core.Parameter;
import org.springframework.r2dbc.core.binding.BindTarget;

/**
 * Utility to bind {@link Parameter} to a {@link BindTarget}. Mainly used within the framework.
 *
 * @author Mark Paluch
 * @since 1.4.1
 */
public final class BindTargetBinder {

	private final BindTarget target;

	public BindTargetBinder(BindTarget target) {
		this.target = target;
	}

	/**
	 * Bind a {@link Parameter} by name.
	 *
	 * @param name must not be {@literal null}.
	 * @param parameter must not be {@literal null}.
	 */
	public void bind(String name, Parameter parameter) {
		Object value = parameter.getValue();
		if (value == null) {
			target.bindNull(name, parameter.getType());
		} else {
			target.bind(name, value);
		}
	}

	/**
	 * Bind a {@link Parameter} by index.
	 *
	 * @param index must not be {@literal null}.
	 * @param parameter must not be {@literal null}.
	 */
	public void bind(int index, Parameter parameter) {
		Object value = parameter.getValue();
		if (value == null) {
			target.bindNull(index, parameter.getType());
		} else {
			target.bind(index, parameter.getValue());
		}
	}
}
