/
Values.java
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/
Values.java
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/*
*
* Copyright (c) 2017 Otávio Santana and others
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Apache License v2.0 which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Apache License v2.0 is available at http://www.opensource.org/licenses/apache2.0.php.
*
* You may elect to redistribute this code under either of these licenses.
*
* Contributors:
*
* Otavio Santana
*
*/
package org.eclipse.jnosql.diana.keyvalue.query;
import jakarta.nosql.Params;
import jakarta.nosql.QueryException;
import jakarta.nosql.Value;
import jakarta.nosql.query.ArrayQueryValue;
import jakarta.nosql.query.Function;
import jakarta.nosql.query.FunctionQueryValue;
import jakarta.nosql.query.JSONQueryValue;
import jakarta.nosql.query.ParamQueryValue;
import jakarta.nosql.query.QueryValue;
import jakarta.nosql.query.ValueType;
import java.util.Arrays;
import java.util.stream.Stream;
import static java.util.stream.Collectors.toList;
final class Values {
private Values() {
}
private static Object get(QueryValue<?> value, Params parameters) {
ValueType type = value.getType();
switch (type) {
case NUMBER:
case STRING:
return value.get();
case PARAMETER:
return parameters.add(ParamQueryValue.class.cast(value).get());
case ARRAY:
return Stream.of(ArrayQueryValue.class.cast(value).get())
.map(v -> get(v, parameters))
.collect(toList());
case FUNCTION:
Function function = FunctionQueryValue.class.cast(value).get();
String name = function.getName();
Object[] params = function.getParams();
if ("convert".equals(name)) {
return executeConvert(parameters, params);
}
String message = String.format("There is not support to the fuction: %s with parameters %s", name,
Arrays.toString(params));
throw new QueryException(message);
case JSON:
return JSONQueryValue.class.cast(value).get().toString();
case CONDITION:
default:
throw new QueryException("There is not suppor to the value: " + type);
}
}
private static Object executeConvert(Params parameters, Object[] params) {
Object value = get(QueryValue.class.cast(params[0]), parameters);
return Value.of(value)
.get((Class<?>) params[1]);
}
static Value getValue(QueryValue<?> value, Params parameters) {
Object result = get(value, parameters);
if (result instanceof Value) {
return Value.class.cast(result);
}
return Value.of(result);
}
}