com.speedment.common.codegen.internal.java.view.GenericView Maven / Gradle / Ivy
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A Speedment bundle that shades all dependencies into one jar. This is
useful when deploying an application on a server.
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/*
*
* Copyright (c) 2006-2019, Speedment, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"); You may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.speedment.common.codegen.internal.java.view;
import com.speedment.common.codegen.Generator;
import com.speedment.common.codegen.Transform;
import com.speedment.common.codegen.model.Generic;
import java.util.Optional;
import static com.speedment.common.codegen.internal.util.CollectorUtil.joinIfNotEmpty;
import static com.speedment.common.codegen.internal.util.NullUtil.requireNonNulls;
/**
* Transforms from a {@link Generic} to java code.
*
* @author Emil Forslund
*/
public final class GenericView implements Transform {
@Override
public Optional transform(Generator gen, Generic model) {
requireNonNulls(gen, model);
if (!model.getLowerBound().isPresent()
&& model.getUpperBounds().isEmpty()) {
return Optional.empty();
} else {
return Optional.of(
model.getLowerBound().orElse("") +
gen.onEach(model.getUpperBounds()).collect(joinIfNotEmpty("&",
model.getLowerBound().isPresent() ?
model.getBoundType() == Generic.BoundType.EXTENDS ?
" extends " : " super "
: "",
""
)
)
);
}
}
}