/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.foundationdb.server.types.aksql.aktypes;
import com.foundationdb.server.types.Attribute;
import com.foundationdb.server.types.TClass;
import com.foundationdb.server.types.TClassBase;
import com.foundationdb.server.types.TClassFormatter;
import com.foundationdb.server.types.TExecutionContext;
import com.foundationdb.server.types.TInstance;
import com.foundationdb.server.types.TParser;
import com.foundationdb.server.types.FormatOptions;
import com.foundationdb.server.types.aksql.AkBundle;
import com.foundationdb.server.types.aksql.AkCategory;
import com.foundationdb.server.types.value.ValueSource;
import com.foundationdb.server.types.value.ValueTarget;
import com.foundationdb.sql.types.DataTypeDescriptor;
import com.foundationdb.sql.types.TypeId;
import com.foundationdb.util.AkibanAppender;
import java.sql.Types;
import java.util.List;
public class AkResultSet extends TClassBase {
public static class Column {
private final String name;
private final TInstance type;
public Column(String name, TInstance type) {
this.name = name;
this.type = type;
}
public String getName() {
return name;
}
public TInstance getType() {
return type;
}
}
private static final TClassFormatter NO_FORMATTER = new TClassFormatter() {
@Override
public void format(TInstance type, ValueSource source, AkibanAppender out) {
throw new UnsupportedOperationException();
}
@Override
public void formatAsLiteral(TInstance type, ValueSource source, AkibanAppender out) {
throw new UnsupportedOperationException();
}
@Override
public void formatAsJson(TInstance type, ValueSource source, AkibanAppender out, FormatOptions options) {
throw new UnsupportedOperationException();
}
};
private static final TParser NO_PARSER = new TParser() {
@Override
public void parse(TExecutionContext context, ValueSource in, ValueTarget out) {
throw new UnsupportedOperationException();
}
};
/**
* A result set instance, which does not obey all of the scalar type protocol.
*/
public static final AkResultSet INSTANCE = new AkResultSet();
private AkResultSet() {
super(AkBundle.INSTANCE.id(),
"result set",
AkCategory.RECORD,
Attribute.NONE.class,
NO_FORMATTER,
1,
1,
0,
null, // UnderlyingType.XXX
NO_PARSER,
-1);
}
public TInstance instance(List<Column> columns) {
TInstance instance = createInstanceNoArgs(false);
instance.setMetaData(columns);
return instance;
}
@Override
public boolean attributeIsPhysical(int attributeIndex) {
throw new UnsupportedOperationException();
}
@Override
protected boolean attributeAlwaysDisplayed(int attributeIndex) {
throw new UnsupportedOperationException();
}
@Override
public int jdbcType() {
return Types.OTHER;
}
@Override
@SuppressWarnings("unchecked")
protected DataTypeDescriptor dataTypeDescriptor(TInstance type) {
List<Column> columns = (List<Column>) type.getMetaData();
String[] columnNames = new String[columns.size()];
DataTypeDescriptor[] columnTypes = new DataTypeDescriptor[columns.size()];
for (int i = 0; i < columns.size(); i++) {
columnNames[i] = columns.get(i).getName();
columnTypes[i] = columns.get(i).getType().dataTypeDescriptor();
}
TypeId typeId = new TypeId.RowMultiSetTypeId(columnNames, columnTypes);
Boolean isNullable = type.nullability();
return new DataTypeDescriptor(typeId, isNullable);
}
@Override
public TInstance instance(boolean nullable) {
throw new UnsupportedOperationException();
}
@Override
protected void validate(TInstance type) {
}
@Override
protected TInstance doPickInstance(TInstance left, TInstance right, boolean suggestedNullability) {
throw new UnsupportedOperationException();
}
public TClass widestComparable()
{
return this;
}
}