| | |
| | | package com.lunhan.xxx.host; |
| | | |
| | | import com.lunhan.xxx.common.ConstantFactory; |
| | | import com.lunhan.xxx.common.util.ListUtil; |
| | | import com.lunhan.xxx.common.util.LocalDateTimeUtil; |
| | | import com.lunhan.xxx.common.util.NumericUtil; |
| | | import com.lunhan.xxx.common.util.StringUtil; |
| | | import com.lunhan.xxx.common.util.*; |
| | | import org.apache.commons.lang3.BooleanUtils; |
| | | |
| | | import java.io.File; |
| | |
| | | import java.io.IOException; |
| | | import java.io.PrintWriter; |
| | | import java.sql.*; |
| | | import java.time.LocalDate; |
| | | import java.time.LocalDateTime; |
| | | import java.util.Date; |
| | | import java.util.*; |
| | | |
| | | public class GenCodeGauss { |
| | |
| | | private static final String PORT = "57654"; |
| | | private static final String USER = "lunhan"; |
| | | private static final String PASSWORD = "lunhan.20240330"; |
| | | private static final String DB_NAME = "test_db1"; |
| | | private static final String DB_NAME = "water_basic"; |
| | | private static final String AUTHOR = "lin.liu"; |
| | | |
| | | private static Connection CONN = null; |
| | |
| | | //#endregion |
| | | |
| | | |
| | | private static Map<String, String> getTables(String dbSchema) { |
| | | public static Map<String, String> getTables(String dbSchema) { |
| | | // dbSchema="public"; |
| | | Map<String, String> result = new LinkedHashMap<>(); |
| | | String sql = "SELECT tb.table_name, d.description AS TABLE_COMMENT" + |
| | |
| | | return result; |
| | | } |
| | | |
| | | private static List<Map<String, Object>> getColumns(String tableName, String dbSchema) { |
| | | public static List<Map<String, Object>> getColumns(String tableName, String dbSchema) { |
| | | List<Map<String, Object>> result = new ArrayList<>(); |
| | | String sql = "select " + |
| | | "col.table_name AS objName, " + |
| | | "col.column_name AS name, " + |
| | | "col.data_type AS type, " + |
| | | "col.character_maximum_length AS LENGTH, " + |
| | | "des.description, " + |
| | | "col.numeric_precision, " + |
| | | "col.numeric_scale," + |
| | | "CASE is_identity WHEN 'YES' THEN 1 ELSE 0 END AS isIdentity, " + |
| | | "CASE col.IS_NULLABLE WHEN 'YES' THEN 1 ELSE 0 END AS isNullable, " + |
| | | "col.column_default AS default " + |
| | | "from " + |
| | | "information_schema.columns col left join pg_description des on " + |
| | | "col.table_name::regclass = des.objoid " + |
| | | "and col.ordinal_position = des.objsubid " + |
| | | "where " + |
| | | "table_name = ? " + |
| | | "and table_schema = 'public' " + |
| | | "order by " + |
| | | String sql = "SELECT col.table_name AS objName, col.column_name AS name, col.udt_name AS type, col.character_maximum_length AS LENGTH, des.description,\n" + |
| | | "col.numeric_precision, \n" + |
| | | "col.numeric_scale,\n" + |
| | | "col.datetime_precision,\n" + |
| | | "CASE is_identity WHEN 'YES' THEN 1 ELSE 0 END AS isIdentity,\n" + |
| | | "CASE col.IS_NULLABLE WHEN 'YES' THEN 1 ELSE 0 END AS isNullable,\n" + |
| | | "col.column_default AS default\n" + |
| | | "FROM information_schema.columns col \n" + |
| | | "LEFT JOIN pg_description des ON col.table_name::regclass = des.objoid AND col.ordinal_position = des.objsubid\n" + |
| | | "WHERE table_name = ? " + |
| | | "AND table_schema = 'public' " + |
| | | "ORDER BY " + |
| | | "ordinal_position;"; |
| | | try (PreparedStatement pStmt = CONN.prepareStatement(sql)) { |
| | | pStmt.setString(1, tableName); |
| | |
| | | return result; |
| | | } |
| | | |
| | | private static String getJavaType(String typeName) { |
| | | public static String getJavaType(String typeName) { |
| | | String result = "String"; |
| | | switch (typeName) { |
| | | case "int2": |
| | | case "int4": |
| | | case "integer": |
| | | case "tinyint": |
| | | result = "Integer"; |
| | |
| | | case "decimal": |
| | | result = "BigDecimal"; |
| | | break; |
| | | case "int8": |
| | | case "bigint": |
| | | result = "Long"; |
| | | break; |
| | |
| | | return result; |
| | | } |
| | | |
| | | private static String underline2Camel(String line, boolean... firstIsUpperCase) { |
| | | public static String underline2Camel(String line, boolean... firstIsUpperCase) { |
| | | String str = ""; |
| | | if (StringUtil.isNullOrEmpty(line)) { |
| | | return str; |
| | |
| | | e.printStackTrace(); |
| | | } |
| | | } |
| | | |
| | | public static String toDBValue(Object value) { |
| | | String result; |
| | | if (value instanceof Number || value instanceof Boolean) { |
| | | result = value.toString(); |
| | | } else if (value instanceof Timestamp) { |
| | | result = String.valueOf(((Timestamp) value).getTime()); |
| | | } else if (value instanceof LocalDateTime) { |
| | | result = "'" + LocalDateTimeUtil.toFormatFullString((LocalDateTime) value) + "'"; |
| | | } else if (value instanceof LocalDate) { |
| | | result = "'" + LocalDateTimeUtil.toFormatString((LocalDate) value) + "'"; |
| | | } else if (value instanceof Date) { |
| | | result = "'" + LocalDateTimeUtil.toFormatFullString(((Date) value).getTime()) + "'"; |
| | | } else if (value instanceof Calendar) { |
| | | result = "'" + CalendarUtil.toDateTimeMSStr((Calendar) value) + "'"; |
| | | } else { |
| | | result = "'" + value.toString() + "'"; |
| | | } |
| | | return result; |
| | | } |
| | | |
| | | public static boolean genTable(String tableName, String tableDesc, List<Map<String, Object>> listColumn, Map<String, String> mapPK, Map<String, String> mapIndex) { |
| | | String sql = "DROP TABLE IF EXISTS \"public\".\"" + tableName + "\";\n" + |
| | | "CREATE TABLE \"public\".\"" + tableName + "\" (\n"; |
| | | |
| | | Map<String, String> mapColumnDesc = new HashMap<>(); |
| | | int idx = 0; |
| | | // 遍历列,构建sql |
| | | for (Map<String, Object> column : listColumn) { |
| | | idx++; |
| | | String name = column.get("name").toString(); |
| | | String type = column.get("type").toString(); |
| | | String desc = column.get("description").toString(); |
| | | |
| | | mapColumnDesc.put(name,desc); |
| | | |
| | | sql += "\t\""+ name +"\" " + type; |
| | | switch (type) { |
| | | case "char": |
| | | case "varchar": |
| | | case "nvarchar": |
| | | case "text": |
| | | String length = column.get("length").toString(); |
| | | sql += "(" + length+ ") NOT NULL DEFAULT NULL::character varying"; |
| | | break; |
| | | case "numeric": |
| | | case "decimal": |
| | | String numeric_precision = column.get("numeric_precision").toString(); |
| | | String numeric_scale = column.get("numeric_scale").toString(); |
| | | sql += "(" + numeric_precision+ ","+ numeric_scale +") NOT NULL DEFAULT 0"; |
| | | break; |
| | | case "datetime": |
| | | case "timestamp": |
| | | String datetime_precision = column.get("datetime_precision").toString(); |
| | | sql += "(" + datetime_precision +") NOT NULL DEFAULT PG_SYSTIMESTAMP()"; |
| | | break; |
| | | case "int": |
| | | case "tinyint": |
| | | case "bit": |
| | | case "int2": |
| | | case "int4": |
| | | case "int8": |
| | | sql += " NOT NULL DEFAULT 0"; |
| | | break; |
| | | |
| | | default: |
| | | sql += " NULL DEFAULT NULL"; |
| | | break; |
| | | } |
| | | if (idx < listColumn.size()) { |
| | | sql += ","; |
| | | } |
| | | sql += "\n"; |
| | | } |
| | | sql += ")\n" + |
| | | ";\n" + |
| | | "COMMENT ON TABLE \"public\".\"" + tableName + "\" IS '" + tableDesc + "';\n"; |
| | | // 构建字段描述sql |
| | | for (Map.Entry<String, String> desc : mapColumnDesc.entrySet()) { |
| | | sql += "COMMENT ON COLUMN \"public\".\"" + tableName + "\".\"" + desc.getKey() +"\" IS '" + desc.getValue().replace("\r\n", " ").replace("\n", " ") + "';\n"; |
| | | } |
| | | // 设置主键 |
| | | if (!mapPK.isEmpty()) { |
| | | for (Map.Entry<String, String> key : mapPK.entrySet()) { |
| | | sql += "ALTER TABLE \"public\".\"" + tableName + "\" ADD CONSTRAINT \"PK_" + tableName + "\" PRIMARY KEY (\"" + key.getValue() +"\");\n"; |
| | | } |
| | | } |
| | | sql += "ALTER TABLE \"public\".\"" + tableName + "\" ADD CONSTRAINT \"PK_" + tableName + "\" PRIMARY KEY (\"id\");\n"; |
| | | // 触发器:自动赋值最后更新时间 |
| | | sql += "CREATE TRIGGER \"TG_" + tableName + "\" BEFORE UPDATE OF \"update_time\" ON \"public\".\"" + tableName + "\"\n" + |
| | | "FOR EACH ROW\n" + |
| | | "EXECUTE PROCEDURE \"public\".\"update_timestamp_column\"();"; |
| | | // 遍历索引,构建sql |
| | | for (Map.Entry<String, String> index : mapIndex.entrySet()) { |
| | | if (!mapPK.containsKey(index.getKey())) { |
| | | sql += "CREATE INDEX \"" + index.getKey() + "\" ON \"public\".\"test_info\"(\"" + index.getValue() + "\");\n"; |
| | | } |
| | | } |
| | | try (PreparedStatement pStmt = CONN.prepareCall(sql)) { |
| | | int[] result = pStmt.executeBatch(); |
| | | return result != null; |
| | | } catch (Exception e) { |
| | | System.out.println(e); |
| | | return Boolean.FALSE; |
| | | } |
| | | } |
| | | |
| | | public static Map<String, String> getPK(String tableName) { |
| | | Map<String, String> mapPK = new HashMap<>(); |
| | | // 查询主键 |
| | | String pkSq = "select pg_attribute.attname as col_name,pg_constraint.conname as pk_name\n" + |
| | | "from pg_constraint\n" + |
| | | "inner join pg_class on pg_constraint.conrelid=pg_class.oid\n" + |
| | | "inner join pg_attribute on pg_attribute.attrelid=pg_class.oid and pg_attribute.attnum=pg_constraint.conkey[1]\n" + |
| | | "where pg_class.relname='" + tableName + "'\n" + |
| | | "and pg_constraint.contype='p'"; |
| | | try (PreparedStatement pStmt = CONN.prepareStatement(pkSq)) { |
| | | try (ResultSet rs = pStmt.executeQuery()) { |
| | | //获取键名 |
| | | ResultSetMetaData md = rs.getMetaData(); |
| | | //获取列的数量 |
| | | int columnCount = md.getColumnCount(); |
| | | while (rs.next()) { |
| | | String pk_name = rs.getString("pk_name"); |
| | | String col_name = rs.getString("col_name"); |
| | | mapPK.put(pk_name, col_name); |
| | | } |
| | | } |
| | | } catch (Exception e) { |
| | | System.out.println(e); |
| | | } |
| | | return mapPK; |
| | | } |
| | | |
| | | public static Map<String, String> getIndex(String tableName) { |
| | | Map<String, String> mapPK = new HashMap<>(); |
| | | // 查询主键 |
| | | String pkSq = "SELECT * FROM pg_indexes WHERE tablename = '" + tableName +"';"; |
| | | try (PreparedStatement pStmt = CONN.prepareStatement(pkSq)) { |
| | | try (ResultSet rs = pStmt.executeQuery()) { |
| | | //获取键名 |
| | | ResultSetMetaData md = rs.getMetaData(); |
| | | while (rs.next()) { |
| | | String indexname = rs.getString("indexname"); |
| | | String indexdef = rs.getString("indexdef"); |
| | | mapPK.put(indexname, indexdef); |
| | | } |
| | | } |
| | | } catch (Exception e) { |
| | | System.out.println(e); |
| | | } |
| | | return mapPK; |
| | | } |
| | | |
| | | public static List<Map<String, Object>> getListAll(String tableName, String dbSchema) { |
| | | List<Map<String, Object>> result = new ArrayList<>(); |
| | | String sql = "SELECT * FROM " + dbSchema + "." + tableName; |
| | | try (PreparedStatement pStmt = CONN.prepareStatement(sql)) { |
| | | try (ResultSet rs = pStmt.executeQuery()) { |
| | | //获取键名 |
| | | ResultSetMetaData md = rs.getMetaData(); |
| | | //获取列的数量 |
| | | int columnCount = md.getColumnCount(); |
| | | while (rs.next()) { |
| | | Map<String, Object> column = new HashMap<>(); |
| | | for (int i = 1; i <= columnCount; i++) { |
| | | String keyName = md.getColumnLabel(i); |
| | | Object value = rs.getObject(i); |
| | | column.put(keyName, value); |
| | | } |
| | | result.add(column); |
| | | } |
| | | } |
| | | } catch (SQLException e) { |
| | | e.printStackTrace(); |
| | | } |
| | | return result; |
| | | } |
| | | |
| | | public static List<Boolean> insertAll(List<Map<String, Object>> list, String tableName, Integer onceCount) { |
| | | List<Boolean> result = new ArrayList<>(); |
| | | String insertSql = "INSERT INTO public." + tableName + "("; |
| | | List<String> listColumn = new ArrayList<>(); |
| | | for (String column : list.get(0).keySet()) { |
| | | listColumn.add(column); |
| | | } |
| | | insertSql += StringUtil.join(listColumn) + ") VALUES"; |
| | | |
| | | String sql = ""; |
| | | for (int i = 0; i < list.size(); i++) { |
| | | if (StringUtil.isNullOrEmpty(sql)) { |
| | | sql = insertSql; |
| | | } |
| | | Map<String, Object> row = list.get(i); |
| | | List<String> listValue = new ArrayList<>(); |
| | | for (Map.Entry<String, Object> item : row.entrySet()) { |
| | | listValue.add(GenCodeGauss.toDBValue(item.getValue())); |
| | | } |
| | | sql += "(" + StringUtil.join(listValue) + ")"; |
| | | if (i > 0 && i % onceCount == 0) { |
| | | try (PreparedStatement pStmt = CONN.prepareStatement(sql)) { |
| | | boolean insertList = pStmt.execute(); |
| | | result.add(insertList); |
| | | System.out.println("插入数据" + Math.max(i - onceCount, 0) + " - " + i + ",结果:" + insertList); |
| | | } catch (SQLException e) { |
| | | e.printStackTrace(); |
| | | } |
| | | sql = ""; |
| | | } |
| | | } |
| | | return result; |
| | | } |
| | | } |