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The Eclipse JNoSQL communication layer, Diana, to Cassandra
/*
* 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.jnosql.diana.cassandra.column;
import org.jnosql.diana.api.column.Column;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.stream.StreamSupport;
/**
* The UDT builder
*/
class UDTBuilder implements UDTNameBuilder, UDTElementBuilder, UDTFinisherBuilder {
private String name;
private String typeName;
private List columns = new ArrayList<>();
private Iterable> udts = new ArrayList<>();
UDTBuilder(String userType) {
this.typeName = userType;
}
@Override
public UDTBuilder withName(String name) throws NullPointerException {
this.name = Objects.requireNonNull(name, "name is required");
return this;
}
@Override
public UDTBuilder addUDT(Iterable udt) throws NullPointerException {
Objects.requireNonNull(udt, "udt is required");
StreamSupport.stream(udt.spliterator(), false).forEach(this.columns::add);
return this;
}
@Override
public UDTBuilder addUDTs(Iterable> udts) throws NullPointerException {
Objects.requireNonNull(udts, "udts is required");
this.udts = udts;
return this;
}
@Override
public UDT build() throws IllegalStateException {
if (Objects.isNull(name)) {
throw new IllegalStateException("name is required");
}
if (Objects.isNull(typeName)) {
throw new IllegalStateException("typeName is required");
}
if (udts.spliterator().getExactSizeIfKnown() == 0) {
return new DefaultUDT(name, typeName, columns);
} else {
return new IterableUDT(name, typeName, udts);
}
}
}
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