public int getFieldJdbcType(int fieldOrdinal) {
RelDataType type = getFieldNamedType(fieldOrdinal);
SqlTypeName typeName = type.getSqlTypeName();
if (typeName == null) {
return Types.OTHER;
}
return typeName.getJdbcOrdinal();
}
public RelDataType getFieldType(int fieldOrdinal) {
RelDataType namedType = getFieldNamedType(fieldOrdinal);
if (namedType.getSqlTypeName() == SqlTypeName.DISTINCT) {
// for most metadata calls, report information about the
// predefined type on which the distinct type is based
return namedType.getFields()[0].getType();
} else {
return namedType;
}
}
public int getFieldScale(int fieldOrdinal) {
RelDataType type = getFieldType(fieldOrdinal);
SqlTypeName typeName = type.getSqlTypeName();
if (typeName == null) {
return 0;
}
if (typeName.allowsPrecScale(true, true)) {
return type.getScale();
} else {
return 0;
}
}
public String getFieldTypeName(int fieldOrdinal) {
RelDataType type = getFieldNamedType(fieldOrdinal);
SqlTypeName typeName = type.getSqlTypeName();
if (typeName == null) {
return type.toString();
}
switch (typeName) {
case STRUCTURED:
case DISTINCT:
return type.getSqlIdentifier().toString();
case INTERVAL_DAY_TIME:
case INTERVAL_YEAR_MONTH:
return type.toString();
}
return typeName.name();
}
/**
* Creates a FarragoJdbcMetaDataImpl.
*
* @param rowType Type info to return
* @param fieldOrigins Origin of each field in column of catalog object
*/
protected FarragoJdbcMetaDataImpl(RelDataType rowType, List<List<String>> fieldOrigins) {
this.rowType = rowType;
this.fieldOrigins = fieldOrigins;
assert rowType != null;
assert fieldOrigins != null;
assert fieldOrigins.size() == rowType.getFieldCount()
: "field origins " + fieldOrigins + " have different count than row type " + rowType;
}
public int getFieldCount() {
return rowType.getFieldCount();
}
public String getFieldName(int fieldOrdinal) {
return rowType.getFields()[fieldOrdinal - 1].getName();
}
public RelDataType getFieldNamedType(int fieldOrdinal) {
return rowType.getFields()[fieldOrdinal - 1].getType();
}
public boolean isFieldSearchable(int fieldOrdinal) {
RelDataType type = getFieldType(fieldOrdinal);
return RelDataTypeComparability.None != type.getComparability();
}
public int isFieldNullable(int fieldOrdinal) {
RelDataType type = getFieldType(fieldOrdinal);
return type.isNullable() ? ResultSetMetaData.columnNullable : ResultSetMetaData.columnNoNulls;
}
public int getFieldPrecision(int fieldOrdinal) {
RelDataType type = getFieldType(fieldOrdinal);
return type.getPrecision();
}