84 lines
2.9 KiB
Java
84 lines
2.9 KiB
Java
/*
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* Copyright 2022-2024 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package xyz.zhouxy.jdbc;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.List;
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import java.util.Optional;
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import java.util.OptionalDouble;
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import java.util.OptionalInt;
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import java.util.OptionalLong;
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import java.util.function.Function;
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import java.util.stream.Collectors;
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import xyz.zhouxy.plusone.commons.collection.CollectionTools;
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import xyz.zhouxy.plusone.commons.util.ArrayTools;
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import xyz.zhouxy.plusone.commons.util.AssertTools;
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import xyz.zhouxy.plusone.commons.util.OptionalTools;
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/**
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* ParamBuilder
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*
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* <p>
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* JDBC 参数构造器，将数据转换为 {@code Object[]} 类型，以传给 {@link PreparedStatement}
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* </p>
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*
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* @author <a href="http://zhouxy.xyz:3000/ZhouXY108">ZhouXY</a>
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* @since 1.0.0
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*/
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public class ParamBuilder {
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public static final Object[] EMPTY_OBJECT_ARRAY = {};
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public static Object[] buildParams(final Object... params) {
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if (ArrayTools.isNullOrEmpty(params)) {
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return EMPTY_OBJECT_ARRAY;
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}
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return Arrays.stream(params)
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.map(param -> {
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if (param instanceof Optional) {
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return OptionalTools.orElseNull((Optional<?>) param);
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}
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if (param instanceof OptionalInt) {
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return OptionalTools.toInteger(((OptionalInt) param));
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}
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if (param instanceof OptionalLong) {
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return OptionalTools.toLong(((OptionalLong) param));
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}
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if (param instanceof OptionalDouble) {
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return OptionalTools.toDouble(((OptionalDouble) param));
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}
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return param;
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})
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.toArray();
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}
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public static <T> List<Object[]> buildBatchParams(final Collection<T> c, final Function<T, Object[]> func) {
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AssertTools.checkNotNull(c, "The collection can not be null.");
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AssertTools.checkNotNull(func, "The func can not be null.");
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if (CollectionTools.isEmpty(c)) {
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return Collections.emptyList();
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}
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return c.stream().map(func).collect(Collectors.toList());
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}
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private ParamBuilder() {
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throw new IllegalStateException("Utility class");
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}
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}
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