@Override
public RelDataType deriveRowType() {
final List<RelDataTypeField> fieldList = table.getRowType().getFieldList();
final RelDataTypeFactory.FieldInfoBuilder builder = getCluster().getTypeFactory().builder();
for (int i = 0; i < table.getRowType().getFieldCount(); i++) {
builder.add(fieldList.get(i));
}
return builder.build();
}
protected RelDataType validateImpl() {
final RelDataTypeFactory.FieldInfoBuilder builder = validator.getTypeFactory().builder();
for (SqlMoniker moniker : validator.catalogReader.getAllSchemaObjectNames(names)) {
final List<String> names1 = moniker.getFullyQualifiedNames();
final SqlValidatorTable table = validator.catalogReader.getTable(names1);
builder.add(Util.last(names1), table.getRowType());
}
return builder.build();
}
public RelDataType inferReturnType(SqlOperatorBinding opBinding) {
RelDataType type = opBinding.getOperandType(0);
if (type.isStruct()) {
type = type.getFieldList().get(0).getType();
}
assert type instanceof ArraySqlType || type instanceof MultisetSqlType;
if (withOrdinality) {
final RelDataTypeFactory.FieldInfoBuilder builder = opBinding.getTypeFactory().builder();
if (type.getComponentType().isStruct()) {
builder.addAll(type.getComponentType().getFieldList());
} else {
builder.add(SqlUtil.deriveAliasFromOrdinal(0), type.getComponentType());
}
return builder.add(ORDINALITY_COLUMN_NAME, SqlTypeName.INTEGER).build();
} else {
return type.getComponentType();
}
}
