add BaseMapper.deleteAllByExample

src/main/java/com/imyeyu/spring/util/SQLProvider.java

@@ -6,6 +6,7 @@ import com.imyeyu.java.bean.timi.TimiException;
 import com.imyeyu.java.ref.Ref;
 import com.imyeyu.spring.annotation.table.AutoUUID;
 import com.imyeyu.spring.annotation.table.Column;
+import com.imyeyu.spring.annotation.table.DeleteColumn;
 import com.imyeyu.spring.annotation.table.Id;
 import com.imyeyu.spring.annotation.table.Table;
 import com.imyeyu.spring.annotation.table.Transient;
@@ -23,6 +24,7 @@ import java.lang.reflect.Field;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
 import java.util.ArrayList;
+import java.util.Date;
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
@@ -232,6 +234,29 @@ public class SQLProvider {
 		return "UPDATE `%s` SET `deleted_at` = %s WHERE `%s` = #{id}".formatted(meta.table, Time.now(), meta.idFieldColumn.columnName);
 	}
 
+	public String deleteAllByExample(Object entity) {
+		EntityMeta meta = getEntityMeta(entity.getClass());
+		TimiException.required(meta.canDelete, "not allow delete for %s".formatted(meta.entityClass));
+
+		FieldColumn deleteColumn = meta.getFieldColumnList().stream().filter(fc -> fc.isDeleteColumn).findFirst().orElse(null);
+		TimiException.required(deleteColumn, "unknown delete column, use com.imyeyu.spring.annotation.table.DeleteColumn annotation on field");
+		assert deleteColumn != null;
+		assert deleteColumn.deleteColumnType != null;
+
+		String delClause = meta.fieldColumnList.stream()
+		                                       .filter(FieldColumn::isNotId)
+											   .filter(fc -> fc.isNotNull(entity))
+		                                       .map(fc -> "`%s` = #{%s}".formatted(fc.columnName, fc.fieldName))
+		                                       .collect(Collectors.joining(" AND "));
+		StringBuilder sql = new StringBuilder("UPDATE `%s` SET `%s` = ".formatted(meta.table, deleteColumn.getColumnName()));
+		sql.append("'").append(switch (deleteColumn.deleteColumnType) {
+			case UNIX -> Time.now();
+			case DATE, DATE_TIME -> new Date();
+		}).append("'");
+		sql.append(" WHERE ").append(delClause);
+		return sql.toString();
+	}
+
 	/**
 	 * 硬删除，需要实体实现 {@link Destroyable}
 	 *
@@ -419,6 +444,10 @@ public class SQLProvider {
 
 		final boolean isAutoUpperUUID;
 
+		final boolean isDeleteColumn;
+
+		final DeleteColumn.Type deleteColumnType;
+
 		public FieldColumn(Field field) {
 			this.field = field;
 
@@ -437,6 +466,12 @@ public class SQLProvider {
 			} else {
 				isAutoUpperUUID = false;
 			}
+			isDeleteColumn = field.isAnnotationPresent(DeleteColumn.class);
+			if (isDeleteColumn) {
+				deleteColumnType = field.getAnnotation(DeleteColumn.class).value();
+			} else {
+				deleteColumnType = null;
+			}
 		}
 
 		public boolean isNull(Object entity) {