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/**
* Copyright (c) 2014, University of Warsaw
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package pl.edu.mimuw.cloudatlas.interpreter;
import java.util.ArrayList;
import java.util.List;
import pl.edu.mimuw.cloudatlas.model.Type;
import pl.edu.mimuw.cloudatlas.model.Value;
import pl.edu.mimuw.cloudatlas.model.ValueBoolean;
import pl.edu.mimuw.cloudatlas.model.ValueList;
class ResultSingle extends Result {
private final Value value;
public ResultSingle(Value value) {
this.value = value;
}
@Override
protected ResultSingle binaryOperationTyped(BinaryOperation operation, ResultSingle right) {
return new ResultSingle(operation.perform(value, right.value));
}
@Override
protected ResultColumn binaryOperationTyped(BinaryOperation operation, ResultColumn right) {
List<Value> results = new ArrayList<Value>();
for (Value value : right.getColumn()) {
results.add(operation.perform(this.value, value));
}
return new ResultColumn(results);
}
protected ResultList binaryOperationTyped(BinaryOperation operation, ResultList right) {
List<Value> results = new ArrayList<Value>();
for (Value value : right.getList()) {
results.add(operation.perform(this.value, value));
}
return new ResultList(results);
}
@Override
public ResultSingle unaryOperation(UnaryOperation operation) {
return new ResultSingle(operation.perform(value));
}
@Override
protected Result callMe(BinaryOperation operation, Result left) {
return left.binaryOperationTyped(operation, this);
}
@Override
public Value getValue() {
return value;
}
@Override
public ValueList getList() {
throw new UnsupportedOperationException("Not a ResultList.");
}
@Override
public ValueList getColumn() {
throw new UnsupportedOperationException("Not a ResultColumn.");
}
@Override
public Result filterNulls() {
throw new UnsupportedOperationException("Operation filterNulls not supported on ResultSingle.");
}
@Override
public Result first(int size) {
throw new UnsupportedOperationException("Operation first not supported on ResultSingle.");
}
@Override
public Result last(int size) {
throw new UnsupportedOperationException("Operation last not supported on ResultSingle.");
}
@Override
public Result random(int size) {
throw new UnsupportedOperationException("Operation random not supported on ResultSingle.");
}
@Override
public ResultSingle convertTo(Type to) {
return new ResultSingle(value.convertTo(to));
}
@Override
public ResultSingle isNull() {
return new ResultSingle(new ValueBoolean(value.isNull()));
}
@Override
public Type getType() {
return value.getType();
}
}
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