com.alibaba.druid.sql.dialect.mysql.ast.MySqlKey Java Examples
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com.alibaba.druid.sql.dialect.mysql.ast.MySqlKey.
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Example #1
Source File: ReverseEngineeringService.java From youran with Apache License 2.0 | 4 votes |
/** * 从单个建表语句中创建实体 * * @param project * @param sqlStatement */ private void saveEntityFromSqlStatement(MetaProjectPO project, SQLCreateTableStatement sqlStatement) { SQLCreateTableStatement createTableStatement = sqlStatement; // 解析表名 String tableName = this.parseTableName(createTableStatement); if (StringUtils.isBlank(tableName)) { return; } String comment = cleanQuote(SafeUtil.getString(createTableStatement.getComment())); MetaEntityPO entity = createEntity(project, tableName, comment); // 获取单独声明的主键 String pkAlone = this.getPkAlone(createTableStatement); List<SQLTableElement> tableElementList = createTableStatement.getTableElementList(); int orderNo = 0; // 缓存遍历到的字段 Map<String, MetaFieldPO> fieldMap = new HashMap<>(32); for (SQLTableElement element : tableElementList) { // 创建字段 if (element instanceof SQLColumnDefinition) { orderNo += 10; SQLColumnDefinition sqlColumnDefinition = (SQLColumnDefinition) element; String fieldName = cleanQuote(sqlColumnDefinition.getNameAsString()); boolean pk = this.isPkField(sqlColumnDefinition, pkAlone); String fieldType = StringUtils.lowerCase(sqlColumnDefinition.getDataType().getName()); int fieldLength = 0; int fieldScale = 0; List<SQLExpr> arguments = sqlColumnDefinition.getDataType().getArguments(); if (CollectionUtils.isNotEmpty(arguments)) { fieldLength = SafeUtil.getInteger(arguments.get(0)); if (arguments.size() >= 2) { fieldScale = SafeUtil.getInteger(arguments.get(1)); } } boolean autoIncrement = sqlColumnDefinition.isAutoIncrement(); boolean notNull = sqlColumnDefinition.containsNotNullConstaint(); if (pk) { notNull = true; } String defaultValue = sqlColumnDefinition.getDefaultExpr() == null ? "NULL" : sqlColumnDefinition.getDefaultExpr().toString(); String desc = sqlColumnDefinition.getComment() == null ? "" : cleanQuote(sqlColumnDefinition.getComment().toString()); MetaFieldPO field = this.createField(entity, fieldName, fieldType, fieldLength, fieldScale, pk, autoIncrement, notNull, orderNo, defaultValue, desc); fieldMap.put(fieldName, field); continue; } if (element instanceof MySqlPrimaryKey) { continue; } // 创建索引 if (element instanceof MySqlKey) { boolean unique = (element instanceof MySqlUnique); MySqlKey sqlKey = (MySqlKey) element; String indexName = cleanQuote(sqlKey.getName().toString()); List<MetaFieldPO> fields = new ArrayList<>(); for (SQLSelectOrderByItem item : sqlKey.getColumns()) { String columnName = cleanQuote(item.getExpr().toString()); fields.add(fieldMap.get(columnName)); } this.createIndex(entity, indexName, unique, fields); } } }