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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.catalog;

import java.util.List;

import org.apache.doris.thrift.TTableDescriptor;

/**
 * A fake catalog representation of an inline view. It's like a table. It has name
 * and columns, but it won't have ids and it shouldn't be converted to Thrift.
 * An inline view is constructed by providing an alias (required) and then adding columns
 * one-by-one.
 */

public class InlineView extends Table {
    /**
     * An inline view only has an alias and columns, but it won't have id, db and owner.
     */
    public InlineView(String alias, List<Column> columns) {
        super(-1, alias, TableType.INLINE_VIEW, columns);
        // ID for inline view has no use.
    }

    /**
     * An inline view only has an alias and columns, but it won't have id, db and owner.
     */
    public InlineView(View view, List<Column> columns) {
        // TODO(zc): think about it
        super(-1, view.getName(), TableType.INLINE_VIEW, columns);
    }

    /**
     * This should never be called.
     */
    public TTableDescriptor toThrift() {
        // An inline view never generate Thrift representation.
        throw new UnsupportedOperationException("Inline View should not generate Thrift representation");
    }

    public int getNumNodes() {
        throw new UnsupportedOperationException("InlineView.getNumNodes() not supported");
    }

}
