From d34f26b302ddba0ad8957ba3e404f99efb3e3bb4 Mon Sep 17 00:00:00 2001
From: Looly <loolly@aliyun.com>
Date: Thu, 7 Nov 2024 18:31:38 +0800
Subject: [PATCH] add QueryBuilder

---
 .../dromara/hutool/db/sql/QueryBuilder.java   | 262 ++++++++++++++++++
 1 file changed, 262 insertions(+)
 create mode 100644 hutool-db/src/main/java/org/dromara/hutool/db/sql/QueryBuilder.java

diff --git a/hutool-db/src/main/java/org/dromara/hutool/db/sql/QueryBuilder.java b/hutool-db/src/main/java/org/dromara/hutool/db/sql/QueryBuilder.java
new file mode 100644
index 000000000..1d1d9c610
--- /dev/null
+++ b/hutool-db/src/main/java/org/dromara/hutool/db/sql/QueryBuilder.java
@@ -0,0 +1,262 @@
+/*
+ * Copyright (c) 2024 Hutool Team and hutool.cn
+ *
+ * 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.
+ */
+
+package org.dromara.hutool.db.sql;
+
+import org.dromara.hutool.core.lang.builder.Builder;
+import org.dromara.hutool.core.text.StrUtil;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * 查询构建器，用于构建查询条件，例如：
+ * <pre>{@code
+ *     Query query = QueryBuilder.of()
+ *         .select("id", "name")
+ *         .from("user")
+ *         .where("id", 1)
+ *         .and("name", "hutool")
+ *         .or("age", 18)
+ *         .build();
+ * }</pre>
+ *
+ * @author Looly
+ * @since 6.0.0
+ */
+public class QueryBuilder implements Builder<Query> {
+	private static final long serialVersionUID = 1L;
+
+	private final List<String> fields;
+	private final List<String> tableNames;
+	private final List<Condition> wheres;
+
+	/**
+	 * 构造
+	 */
+	public QueryBuilder() {
+		fields = new ArrayList<>();
+		tableNames = new ArrayList<>();
+		wheres = new ArrayList<>();
+	}
+
+	/**
+	 * 批量添加字段，即{@code select field1,field2,field3 }
+	 *
+	 * @param fields 字段名
+	 * @return this
+	 */
+	public QueryBuilder addFields(final String... fields) {
+		this.fields.addAll(Arrays.asList(fields));
+		return this;
+	}
+
+	/**
+	 * 添加多个表名，即{@code from table1,table2 }
+	 *
+	 * @param tableNames 表名
+	 * @return this
+	 */
+	public QueryBuilder addTableNames(final String... tableNames) {
+		this.tableNames.addAll(Arrays.asList(tableNames));
+		return this;
+	}
+
+	/**
+	 * 添加相等条件，即{@code field = value }
+	 *
+	 * @param field 字段名
+	 * @param value 值
+	 * @return this
+	 */
+	public QueryBuilder eq(final String field, final Object value) {
+		return addCondition(new Condition(field, value));
+	}
+
+	/**
+	 * 添加不等条件，即{@code  field != value }
+	 *
+	 * @param field 字段名
+	 * @param value 值
+	 * @return this
+	 */
+	public QueryBuilder ne(final String field, final Object value) {
+		return addCondition(new Condition(field, "!=", value));
+	}
+
+	/**
+	 * 添加大于条件，即{@code field > value}
+	 *
+	 * @param field 字段名
+	 * @param value 值
+	 * @return this
+	 */
+	public QueryBuilder gt(final String field, final Object value) {
+		return addCondition(new Condition(field, ">", value));
+	}
+
+	/**
+	 * 添加小于条件，即{@code field < value}
+	 *
+	 * @param field 字段名
+	 * @param value 值
+	 * @return this
+	 */
+	public QueryBuilder lt(final String field, final Object value) {
+		return addCondition(new Condition(field, "<", value));
+	}
+
+	/**
+	 * 添加大于等于条件，即{@code field >= value}
+	 *
+	 * @param field 字段名
+	 * @param value 值
+	 * @return this
+	 */
+	public QueryBuilder ge(final String field, final Object value) {
+		return addCondition(new Condition(field, ">=", value));
+	}
+
+	/**
+	 * 添加小于等于条件，即{@code field <= value}
+	 *
+	 * @param field 字段名
+	 * @param value 值
+	 * @return this
+	 */
+	public QueryBuilder le(final String field, final Object value) {
+		return addCondition(new Condition(field, "<=", value));
+	}
+
+	/**
+	 * 添加模糊查询条件，即{@code field like '%value%'}
+	 *
+	 * @param field 字段名
+	 * @param value 值
+	 * @return this
+	 */
+	public QueryBuilder like(final String field, final String value) {
+		return addCondition(new Condition(field, value, Condition.LikeType.Contains));
+	}
+
+	/**
+	 * 添加以固定值开头模糊查询条件，即{@code field like 'value%'}
+	 *
+	 * @param field 字段名
+	 * @param value 值
+	 * @return this
+	 */
+	public QueryBuilder likeStartWith(final String field, final String value) {
+		return addCondition(new Condition(field, value, Condition.LikeType.StartWith));
+	}
+
+	/**
+	 * 添加以固定值结尾模糊查询条件，即{@code field like '%value'}
+	 *
+	 * @param field 字段名
+	 * @param value 值
+	 * @return this
+	 */
+	public QueryBuilder likeEndWith(final String field, final String value) {
+		return addCondition(new Condition(field, value, Condition.LikeType.EndWith));
+	}
+
+	/**
+	 * 添加IN查询条件，即{@code field IN (value1,value2)}
+	 *
+	 * @param field  字段名
+	 * @param values 值
+	 * @return this
+	 */
+	public QueryBuilder in(final String field, final Object... values) {
+		return addCondition(new Condition(field, "IN", values));
+	}
+
+	/**
+	 * 添加IN查询条件，即{@code field IN (value1,value2)}
+	 *
+	 * @param field  字段名
+	 * @param values 值
+	 * @return this
+	 */
+	public QueryBuilder in(final String field, final Iterable<?> values) {
+		return addCondition(new Condition(field, "IN", values));
+	}
+
+	/**
+	 * 添加非IN查询条件，即{@code field NOT IN (value1,value2)}
+	 *
+	 * @param field  字段名
+	 * @param values 值
+	 * @return this
+	 */
+	public QueryBuilder notIn(final String field, final Object... values) {
+		return addCondition(new Condition(field, "NOT IN", values));
+	}
+
+	/**
+	 * 添加非IN查询条件，即{@code field NOT IN (value1,value2)}
+	 *
+	 * @param field  字段名
+	 * @param values 值
+	 * @return this
+	 */
+	public QueryBuilder notIn(final String field, final Iterable<?> values) {
+		return addCondition(new Condition(field, "NOT IN", values));
+	}
+
+	/**
+	 * 添加BETWEEN查询条件，即{@code field BETWEEN start AND end}
+	 *
+	 * @param field 字段名
+	 * @param start 开始值
+	 * @param end   结束值
+	 * @return this
+	 */
+	public QueryBuilder between(final String field, final Object start, final Object end) {
+		return addCondition(new Condition(field, StrUtil.format("BETWEEN {} AND {}", start, end)));
+	}
+
+	/**
+	 * 添加非BETWEEN查询条件，即{@code field NOT BETWEEN start AND end}
+	 *
+	 * @param field 字段名
+	 * @param start 开始值
+	 * @param end   结束值
+	 * @return this
+	 */
+	public QueryBuilder notBetween(final String field, final Object start, final Object end) {
+		return addCondition(new Condition(field, StrUtil.format("NOT BETWEEN {} AND {}", start, end)));
+	}
+
+	/**
+	 * 添加自定义条件
+	 *
+	 * @param condition 条件
+	 * @return this
+	 */
+	public QueryBuilder addCondition(final Condition condition) {
+		this.wheres.add(condition);
+		return this;
+	}
+
+
+	@Override
+	public Query build() {
+		return new Query(fields, tableNames.toArray(new String[0]), wheres.toArray(new Condition[0]), null);
+	}
+}