add generic dialect apache#7956

seatunnel-connectors-v2/connector-jdbc/src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/DatabaseIdentifier.java

@@ -18,6 +18,7 @@
 package org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect;
 
 public class DatabaseIdentifier {
+    public static final String GENERIC = "Generic";
     public static final String DB_2 = "DB2";
     public static final String DAMENG = "Dameng";
     public static final String GBASE_8A = "Gbase8a";

seatunnel-connectors-v2/connector-jdbc/src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/GenericDialect.java

@@ -0,0 +1,85 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect;
+
+import org.apache.seatunnel.api.table.catalog.TablePath;
+import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.converter.AbstractJdbcRowConverter;
+import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.converter.JdbcRowConverter;
+import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.dialectenum.FieldIdeEnum;
+
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.Optional;
+
+@Slf4j
+public class GenericDialect implements JdbcDialect {
+
+    public String fieldIde = FieldIdeEnum.ORIGINAL.getValue();
+
+    public GenericDialect() {}
+
+    public GenericDialect(String fieldIde) {
+        this.fieldIde = fieldIde;
+    }
+
+    @Override
+    public String dialectName() {
+        return DatabaseIdentifier.GENERIC;
+    }
+
+    @Override
+    public JdbcRowConverter getRowConverter() {
+        return new AbstractJdbcRowConverter() {
+            @Override
+            public String converterName() {
+                return DatabaseIdentifier.GENERIC;
+            }
+        };
+    }
+
+    @Override
+    public JdbcDialectTypeMapper getJdbcDialectTypeMapper() {
+        return new GenericTypeMapper();
+    }
+
+    @Override
+    public String quoteIdentifier(String identifier) {
+        return getFieldIde(identifier, fieldIde);
+    }
+
+    @Override
+    public String quoteDatabaseIdentifier(String identifier) {
+        return identifier;
+    }
+
+    @Override
+    public String tableIdentifier(TablePath tablePath) {
+        return tableIdentifier(tablePath.getDatabaseName(), tablePath.getTableName());
+    }
+
+    @Override
+    public Optional<String> getUpsertStatement(
+            String database, String tableName, String[] fieldNames, String[] uniqueKeyFields) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public TablePath parse(String tablePath) {
+        return TablePath.of(tablePath, false);
+    }
+}

seatunnel-connectors-v2/connector-jdbc/src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/GenericDialectFactory.java

@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect;
+
+import com.google.auto.service.AutoService;
+
+import javax.annotation.Nonnull;
+
+/** Factory for {@link GenericDialect}. */
+@AutoService(JdbcDialectFactory.class)
+public class GenericDialectFactory implements JdbcDialectFactory {
+
+    // GenericDialect does not have any special requirements.
+    @Override
+    public boolean acceptsURL(String url) {
+        return true;
+    }
+
+    @Override
+    public JdbcDialect create() {
+        return new GenericDialect();
+    }
+
+    @Override
+    public JdbcDialect create(@Nonnull String compatibleMode, String fieldIde) {
+        return new GenericDialect(fieldIde);
+    }
+}

seatunnel-connectors-v2/connector-jdbc/src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/GenericTypeConverter.java

@@ -0,0 +1,201 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect;
+
+import org.apache.seatunnel.shade.com.google.common.base.Preconditions;
+
+import org.apache.seatunnel.api.table.catalog.Column;
+import org.apache.seatunnel.api.table.catalog.PhysicalColumn;
+import org.apache.seatunnel.api.table.converter.BasicTypeDefine;
+import org.apache.seatunnel.api.table.converter.TypeConverter;
+import org.apache.seatunnel.api.table.type.BasicType;
+import org.apache.seatunnel.api.table.type.DecimalType;
+import org.apache.seatunnel.api.table.type.LocalTimeType;
+import org.apache.seatunnel.api.table.type.PrimitiveByteArrayType;
+
+import com.google.auto.service.AutoService;
+import lombok.extern.slf4j.Slf4j;
+
+import java.sql.JDBCType;
+
+@Slf4j
+@AutoService(TypeConverter.class)
+public class GenericTypeConverter implements TypeConverter<BasicTypeDefine> {
+
+    public static final GenericTypeConverter DEFAULT_INSTANCE = new GenericTypeConverter();
+
+    public static final int MAX_PRECISION = 65;
+    public static final int DEFAULT_PRECISION = 38;
+    public static final int MAX_SCALE = MAX_PRECISION - 1;
+    public static final int DEFAULT_SCALE = 18;
+
+    @Override
+    public String identifier() {
+        return DatabaseIdentifier.GENERIC;
+    }
+
+    /**
+     * Convert an external system's type definition to {@link Column}.
+     *
+     * @param typeDefine type define
+     * @return column
+     */
+    @Override
+    public Column convert(BasicTypeDefine typeDefine) {
+        PhysicalColumn.PhysicalColumnBuilder builder =
+                PhysicalColumn.builder()
+                        .name(typeDefine.getName())
+                        .nullable(typeDefine.isNullable())
+                        .defaultValue(typeDefine.getDefaultValue())
+                        .comment(typeDefine.getComment());
+        String dataType = typeDefine.getDataType().toUpperCase();
+        JDBCType sqlType = JDBCType.valueOf(dataType);
+        switch (sqlType) {
+            case NULL:
+                builder.dataType(BasicType.VOID_TYPE);
+                break;
+            case BOOLEAN:
+                builder.dataType(BasicType.BOOLEAN_TYPE);
+                break;
+            case BIT:
+                if (typeDefine.getLength() == null
+                        || typeDefine.getLength() <= 0
+                        || typeDefine.getLength() == 1) {
+                    builder.dataType(BasicType.BOOLEAN_TYPE);
+                } else {
+                    builder.dataType(PrimitiveByteArrayType.INSTANCE);
+                    // BIT(M) -> BYTE(M/8)
+                    long byteLength = typeDefine.getLength() / 8;
+                    byteLength += typeDefine.getLength() % 8 > 0 ? 1 : 0;
+                    builder.columnLength(byteLength);
+                }
+                break;
+            case TINYINT:
+                builder.dataType(BasicType.BYTE_TYPE);
+                break;
+            case SMALLINT:
+                builder.dataType(BasicType.SHORT_TYPE);
+                break;
+            case INTEGER:
+                builder.dataType(BasicType.INT_TYPE);
+                break;
+            case BIGINT:
+                builder.dataType(BasicType.LONG_TYPE);
+                break;
+            case REAL:
+            case FLOAT:
+                builder.dataType(BasicType.FLOAT_TYPE);
+                break;
+            case DOUBLE:
+                builder.dataType(BasicType.DOUBLE_TYPE);
+                break;
+            case NUMERIC:
+                DecimalType decimalTypeForNumeric;
+                if (typeDefine.getPrecision() != null && typeDefine.getPrecision() > 0) {
+                    decimalTypeForNumeric =
+                            new DecimalType(
+                                    typeDefine.getPrecision().intValue(), typeDefine.getScale());
+                } else {
+                    decimalTypeForNumeric = new DecimalType(DEFAULT_PRECISION, DEFAULT_SCALE);
+                }
+                builder.dataType(decimalTypeForNumeric);
+                break;
+            case DECIMAL:
+                Preconditions.checkArgument(typeDefine.getPrecision() > 0);
+                DecimalType decimalType;
+                if (typeDefine.getPrecision() > DEFAULT_PRECISION) {
+                    decimalType = new DecimalType(DEFAULT_PRECISION, DEFAULT_SCALE);
+                } else {
+                    decimalType =
+                            new DecimalType(
+                                    typeDefine.getPrecision().intValue(),
+                                    typeDefine.getScale() == null
+                                            ? 0
+                                            : typeDefine.getScale().intValue());
+                }
+                builder.dataType(decimalType);
+                builder.columnLength(Long.valueOf(decimalType.getPrecision()));
+                builder.scale(decimalType.getScale());
+                break;
+
+            case CHAR:
+            case VARCHAR:
+            case LONGVARCHAR:
+            case NCHAR:
+            case NVARCHAR:
+            case LONGNVARCHAR:
+            case CLOB:
+            case DATALINK:
+            case NCLOB:
+            case SQLXML:
+                builder.dataType(BasicType.STRING_TYPE);
+                break;
+
+            case BINARY:
+            case BLOB:
+            case VARBINARY:
+            case LONGVARBINARY:
+                if (typeDefine.getLength() == null || typeDefine.getLength() <= 0) {
+                    builder.columnLength(1L);
+                } else {
+                    builder.columnLength(typeDefine.getLength());
+                }
+                builder.dataType(PrimitiveByteArrayType.INSTANCE);
+                break;
+            case DATE:
+                builder.dataType(LocalTimeType.LOCAL_DATE_TYPE);
+                break;
+            case TIME:
+                builder.dataType(LocalTimeType.LOCAL_TIME_TYPE);
+                builder.scale(typeDefine.getScale());
+                break;
+            case TIMESTAMP:
+                builder.dataType(LocalTimeType.LOCAL_DATE_TIME_TYPE);
+                builder.scale(typeDefine.getScale());
+                break;
+
+            case OTHER:
+            case ARRAY:
+            case JAVA_OBJECT:
+            case DISTINCT:
+            case STRUCT:
+            case REF:
+            case ROWID:
+            default:
+                log.warn(
+                        "JDBC type {} ({}) not currently supported",
+                        sqlType.getVendorTypeNumber(),
+                        sqlType.getName());
+        }
+        return builder.build();
+    }
+
+    /**
+     * Convert {@link Column} to an external system's type definition.
+     *
+     * @param column
+     * @return
+     */
+    @Override
+    public BasicTypeDefine reconvert(Column column) {
+        throw new UnsupportedOperationException(
+                String.format(
+                        "%s (%s) type doesn't have a mapping to the SQL database column type",
+                        column.getName(), column.getDataType().getSqlType().name()));
+    }
+}

seatunnel-connectors-v2/connector-jdbc/src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/GenericTypeMapper.java

@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect;
+
+import org.apache.seatunnel.api.table.catalog.Column;
+import org.apache.seatunnel.api.table.converter.BasicTypeDefine;
+
+public class GenericTypeMapper implements JdbcDialectTypeMapper {
+
+    private GenericTypeConverter typeConverter;
+
+    public GenericTypeMapper() {
+        this(GenericTypeConverter.DEFAULT_INSTANCE);
+    }
+
+    public GenericTypeMapper(GenericTypeConverter typeConverter) {
+        this.typeConverter = typeConverter;
+    }
+
+    @Override
+    public Column mappingColumn(BasicTypeDefine typeDefine) {
+        return typeConverter.convert(typeDefine);
+    }
+}