in seatunnel-connectors-v2/connector-jdbc/src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/db2/DB2TypeConverter.java [230:421]
public BasicTypeDefine reconvert(Column column) {
BasicTypeDefine.BasicTypeDefineBuilder builder =
BasicTypeDefine.builder()
.name(column.getName())
.nullable(column.isNullable())
.comment(column.getComment())
.defaultValue(column.getDefaultValue());
switch (column.getDataType().getSqlType()) {
case BOOLEAN:
builder.columnType(DB2_BOOLEAN);
builder.dataType(DB2_BOOLEAN);
break;
case TINYINT:
case SMALLINT:
builder.columnType(DB2_SMALLINT);
builder.dataType(DB2_SMALLINT);
break;
case INT:
builder.columnType(DB2_INT);
builder.dataType(DB2_INT);
break;
case BIGINT:
builder.columnType(DB2_BIGINT);
builder.dataType(DB2_BIGINT);
break;
case FLOAT:
builder.columnType(DB2_REAL);
builder.dataType(DB2_REAL);
break;
case DOUBLE:
builder.columnType(DB2_DOUBLE);
builder.dataType(DB2_DOUBLE);
break;
case DECIMAL:
DecimalType decimalType = (DecimalType) column.getDataType();
long precision = decimalType.getPrecision();
int scale = decimalType.getScale();
if (precision <= 0) {
precision = DEFAULT_PRECISION;
scale = DEFAULT_SCALE;
log.warn(
"The decimal column {} type decimal({},{}) is out of range, "
+ "which is precision less than 0, "
+ "it will be converted to decimal({},{})",
column.getName(),
decimalType.getPrecision(),
decimalType.getScale(),
precision,
scale);
} else if (precision > MAX_PRECISION) {
scale = (int) Math.max(0, scale - (precision - MAX_PRECISION));
precision = MAX_PRECISION;
log.warn(
"The decimal column {} type decimal({},{}) is out of range, "
+ "which exceeds the maximum precision of {}, "
+ "it will be converted to decimal({},{})",
column.getName(),
decimalType.getPrecision(),
decimalType.getScale(),
MAX_PRECISION,
precision,
scale);
}
if (scale < 0) {
scale = 0;
log.warn(
"The decimal column {} type decimal({},{}) is out of range, "
+ "which is scale less than 0, "
+ "it will be converted to decimal({},{})",
column.getName(),
decimalType.getPrecision(),
decimalType.getScale(),
precision,
scale);
} else if (scale > MAX_SCALE) {
scale = MAX_SCALE;
log.warn(
"The decimal column {} type decimal({},{}) is out of range, "
+ "which exceeds the maximum scale of {}, "
+ "it will be converted to decimal({},{})",
column.getName(),
decimalType.getPrecision(),
decimalType.getScale(),
MAX_SCALE,
precision,
scale);
}
builder.columnType(String.format("%s(%s,%s)", DB2_DECIMAL, precision, scale));
builder.dataType(DB2_DECIMAL);
builder.precision(precision);
builder.scale(scale);
break;
case BYTES:
if (column.getColumnLength() == null || column.getColumnLength() <= 0) {
builder.columnType(
String.format("%s(%s)", DB2_VARBINARY, MAX_VARBINARY_LENGTH));
builder.dataType(DB2_VARBINARY);
builder.length(column.getColumnLength());
} else if (column.getColumnLength() <= MAX_BINARY_LENGTH) {
builder.columnType(
String.format("%s(%s)", DB2_BINARY, column.getColumnLength()));
builder.dataType(DB2_BINARY);
builder.length(column.getColumnLength());
} else if (column.getColumnLength() <= MAX_VARBINARY_LENGTH) {
builder.columnType(
String.format("%s(%s)", DB2_VARBINARY, column.getColumnLength()));
builder.dataType(DB2_VARBINARY);
builder.length(column.getColumnLength());
} else {
long length = column.getColumnLength();
if (length > MAX_BLOB_LENGTH) {
length = MAX_BLOB_LENGTH;
log.warn(
"The length of blob type {} is out of range, "
+ "it will be converted to {}({})",
column.getName(),
DB2_BLOB,
length);
}
builder.columnType(String.format("%s(%s)", DB2_BLOB, length));
builder.dataType(DB2_BLOB);
builder.length(length);
}
break;
case STRING:
if (column.getColumnLength() == null || column.getColumnLength() <= 0) {
builder.columnType(String.format("%s(%s)", DB2_VARCHAR, MAX_VARCHAR_LENGTH));
builder.dataType(DB2_VARCHAR);
builder.length(column.getColumnLength());
} else if (column.getColumnLength() <= MAX_CHAR_LENGTH) {
builder.columnType(String.format("%s(%s)", DB2_CHAR, column.getColumnLength()));
builder.dataType(DB2_CHAR);
builder.length(column.getColumnLength());
} else if (column.getColumnLength() <= MAX_VARCHAR_LENGTH) {
builder.columnType(
String.format("%s(%s)", DB2_VARCHAR, column.getColumnLength()));
builder.dataType(DB2_VARCHAR);
builder.length(column.getColumnLength());
} else {
long length = column.getColumnLength();
if (length > MAX_CLOB_LENGTH) {
length = MAX_CLOB_LENGTH;
log.warn(
"The length of clob type {} is out of range, "
+ "it will be converted to {}({})",
column.getName(),
DB2_CLOB,
length);
}
builder.columnType(String.format("%s(%s)", DB2_CLOB, length));
builder.dataType(DB2_CLOB);
builder.length(length);
}
break;
case DATE:
builder.columnType(DB2_DATE);
builder.dataType(DB2_DATE);
break;
case TIME:
builder.columnType(DB2_TIME);
builder.dataType(DB2_TIME);
break;
case TIMESTAMP:
if (column.getScale() != null && column.getScale() > 0) {
int timestampScale = column.getScale();
if (column.getScale() > MAX_TIMESTAMP_SCALE) {
timestampScale = MAX_TIMESTAMP_SCALE;
log.warn(
"The timestamp column {} type timestamp({}) is out of range, "
+ "which exceeds the maximum scale of {}, "
+ "it will be converted to timestamp({})",
column.getName(),
column.getScale(),
MAX_TIMESTAMP_SCALE,
timestampScale);
}
builder.columnType(String.format("%s(%s)", DB2_TIMESTAMP, timestampScale));
builder.scale(timestampScale);
} else {
builder.columnType(DB2_TIMESTAMP);
}
builder.dataType(DB2_TIMESTAMP);
break;
default:
throw CommonError.convertToConnectorTypeError(
DatabaseIdentifier.DB_2,
column.getDataType().getSqlType().name(),
column.getName());
}
return builder.build();
}