com.speedment.common.codegen.internal.java.view.AnnotationUsageView 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.AnnotationUsage;
import java.util.NoSuchElementException;
import java.util.Optional;
import java.util.stream.Stream;
import static com.speedment.common.codegen.internal.util.CollectorUtil.joinIfNotEmpty;
import static java.util.Objects.requireNonNull;
/**
* Transforms from an {@link AnnotationUsage} to java code.
*
* @author Emil Forslund
*/
public final class AnnotationUsageView implements Transform {
@Override
public Optional transform(Generator gen, AnnotationUsage model) {
requireNonNull(gen);
requireNonNull(model);
final Optional value = gen.on(model.getValue());
final Stream valueStream = value.map(Stream::of).orElseGet(Stream::empty);
return Optional.of(
"@" + gen.on(model.getType()).orElseThrow(NoSuchElementException::new)
+ Stream.of(
model.getValues().stream()
.map(e -> e.getKey() +
gen.on(e.getValue())
.map(s -> " = " + s)
.orElse("")
),
valueStream
).flatMap(s -> s).collect(
joinIfNotEmpty(", ", "(", ")")
)
);
}
}