Retrieving Column Metadata on the Link (Java™ Integration stage in DataStage)
The ColumnMetadata interface defines methods
that are used to get the metadata such as column name, data type,
and length associated to each column on the link. The column metadata
that are associated with the Information Server DataStage® link can
be retrieved by invoking the Link.getColumnMetadata(),
the Link.getColumn(int) and the Link.getColumn(String) method.
Methods provided by ColumnMetadata interface
getDataElementName()getDerivation()getDescription()getDisplaySize()getIndex()getName()getNativeType()getPrecision()getScale()getSQLType()getSQLTypeName()getType()hasMicrosecondResolution()isKey()isNullable()isSigned()isUnicode()
The following example retrieves the name and SQL type
of the first column on the link.
ColumnMetadata columnMetadata = m_inputLink.getColumn(0);
String columnName = columnMetadata.getName();
int sqlType = columnMetadata.getSQLType();