in seatunnel-connectors-v2/connector-jdbc/src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/saphana/SapHanaTypeConverter.java [312:467]
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(HANA_BOOLEAN);
builder.dataType(HANA_BOOLEAN);
builder.length(2L);
break;
case TINYINT:
builder.columnType(HANA_TINYINT);
builder.dataType(HANA_TINYINT);
break;
case SMALLINT:
builder.columnType(HANA_SMALLINT);
builder.dataType(HANA_SMALLINT);
break;
case INT:
builder.columnType(HANA_INTEGER);
builder.dataType(HANA_INTEGER);
break;
case BIGINT:
builder.columnType(HANA_BIGINT);
builder.dataType(HANA_BIGINT);
break;
case FLOAT:
builder.columnType(HANA_REAL);
builder.dataType(HANA_REAL);
break;
case DOUBLE:
builder.columnType(HANA_DOUBLE);
builder.dataType(HANA_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)", HANA_DECIMAL, precision, scale));
builder.dataType(HANA_DECIMAL);
builder.precision(precision);
builder.scale(scale);
break;
case BYTES:
builder.columnType(HANA_BLOB);
builder.dataType(HANA_BLOB);
break;
case STRING:
if (column.getColumnLength() == null
|| column.getColumnLength() <= MAX_NVARCHAR_LENGTH) {
builder.columnType(HANA_NVARCHAR);
builder.dataType(HANA_NVARCHAR);
builder.length(
column.getColumnLength() == null
? MAX_NVARCHAR_LENGTH
: column.getColumnLength());
} else {
builder.columnType(HANA_CLOB);
builder.dataType(HANA_CLOB);
}
break;
case DATE:
builder.columnType(HANA_DATE);
builder.dataType(HANA_DATE);
break;
case TIME:
builder.columnType(HANA_TIME);
builder.dataType(HANA_TIME);
break;
case TIMESTAMP:
if (column.getScale() == null || column.getScale() <= 0) {
builder.columnType(HANA_SECONDDATE);
builder.dataType(HANA_SECONDDATE);
} else {
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(HANA_TIMESTAMP);
builder.dataType(HANA_TIMESTAMP);
builder.scale(timestampScale);
}
break;
default:
throw CommonError.convertToConnectorTypeError(
DatabaseIdentifier.SAP_HANA,
column.getDataType().getSqlType().name(),
column.getName());
}
BasicTypeDefine typeDefine = builder.build();
typeDefine.setColumnType(
appendColumnSizeIfNeed(
typeDefine.getColumnType(), typeDefine.getLength(), typeDefine.getScale()));
return typeDefine;
}