/**
* 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.qp.row;
import com.foundationdb.qp.rowtype.RowType;
import com.foundationdb.server.types.TInstance;
import com.foundationdb.server.types.value.Value;
import com.foundationdb.server.types.value.ValueSource;
import com.foundationdb.server.types.value.ValueTargets;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
class AbstractValuesHolderRow extends AbstractRow {
@Override
public RowType rowType() {
return rowType;
}
@Override
public HKey hKey() {
throw new UnsupportedOperationException();
}
@Override
public ValueSource uncheckedValue(int i) {
Value value = values.get(i);
if (!value.hasAnyValue())
throw new IllegalStateException("value at index " + i + " was never set");
return value;
}
// for use by subclasses
AbstractValuesHolderRow(RowType rowType, boolean isMutable) {
this.isMutable = isMutable;
this.rowType = rowType;
int nfields = rowType.nFields();
values = new ArrayList<>(nfields);
for (int i = 0; i < nfields; ++i) {
TInstance type = rowType.typeAt(i);
values.add(new Value(type));
}
}
AbstractValuesHolderRow(RowType rowType, List<Value> values) {
this.isMutable = false;
this.rowType = rowType;
this.values = Collections.unmodifiableList(values);
}
AbstractValuesHolderRow(RowType rowType, boolean isMutable,
Iterator<? extends ValueSource> initialValues)
{
this(rowType, isMutable);
int i = 0;
while(initialValues.hasNext()) {
if (i >= values.size())
throw new IllegalArgumentException("too many initial values: reached limit of " + values.size());
ValueSource nextValue = initialValues.next();
TInstance nextValueType = nextValue.getType();
TInstance expectedTInst = rowType.typeAt(i);
if (TInstance.tClass(nextValueType) != TInstance.tClass(expectedTInst))
throw new IllegalArgumentException(
"value at index " + i + " expected type " + expectedTInst
+ ", but UnderlyingType was " + nextValueType + ": " + nextValue);
ValueTargets.copyFrom(nextValue, values.get(i++));
}
if (i != values.size())
throw new IllegalArgumentException("not enough initial values: required " + values.size() + " but saw " + i);
}
void clear() {
checkMutable();
}
Value valueAt(int index) {
checkMutable();
return values.get(index);
}
private void checkMutable() {
if (!isMutable)
throw new IllegalStateException("can't invoke method on an immutable AbstractValuesHolderRow");
}
@Override
public boolean isBindingsSensitive() {
return false;
}
private final RowType rowType;
protected final List<Value> values;
private final boolean isMutable;
}