public boolean isKey(BitSet columns) {
return parent.isKey(columns);
}
public RelOptSchema getRelOptSchema() {
return parent.getRelOptSchema();
}
public List<RelCollation> getCollationList() {
return parent.getCollationList();
}
public RelDataType getRowType() {
return parent.getRowType();
}
public double getRowCount() {
return parent.getRowCount();
}
public List<String> getQualifiedName() {
return parent.getQualifiedName();
}
public Expression getExpression(Class clazz) {
return parent.getExpression(clazz);
}
public <T> T unwrap(Class<T> clazz) {
if (clazz.isInstance(this)) {
return clazz.cast(this);
}
return parent.unwrap(clazz);
}
