/
MavenFormatStageImpl.java
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/
MavenFormatStageImpl.java
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/*
* JBoss, Home of Professional Open Source
* Copyright 2012, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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 org.jboss.shrinkwrap.resolver.impl.maven;
import java.io.File;
import java.io.InputStream;
import java.lang.reflect.Array;
import java.text.MessageFormat;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import org.jboss.shrinkwrap.resolver.api.NoResolvedResultException;
import org.jboss.shrinkwrap.resolver.api.NonUniqueResultException;
import org.jboss.shrinkwrap.resolver.api.maven.MavenFormatStage;
import org.jboss.shrinkwrap.resolver.api.maven.MavenResolvedArtifact;
import org.jboss.shrinkwrap.resolver.impl.maven.util.Validate;
import org.jboss.shrinkwrap.resolver.spi.format.FormatProcessor;
import org.jboss.shrinkwrap.resolver.spi.format.FormatProcessors;
/**
* Implementation of {@link MavenFormatStage}
*
* @author <a href="mailto:kpiwko@redhat.com">Karel Piwko</a>
*/
public class MavenFormatStageImpl implements MavenFormatStage {
private final Collection<MavenResolvedArtifact> artifacts;
public MavenFormatStageImpl(final Collection<MavenResolvedArtifact> artifacts) {
assert artifacts != null : "Artifacts are required";
this.artifacts = artifacts;
}
@Override
public File[] asFile() {
return as(File.class);
}
@Override
public File asSingleFile() throws NonUniqueResultException, NoResolvedResultException {
return asSingle(File.class);
}
@Override
public InputStream[] asInputStream() {
return as(InputStream.class);
}
@Override
public InputStream asSingleInputStream() throws NonUniqueResultException, NoResolvedResultException {
return asSingle(InputStream.class);
}
@Override
public MavenResolvedArtifact[] asResolvedArtifact() {
return as(MavenResolvedArtifact.class);
}
@Override
public MavenResolvedArtifact asSingleResolvedArtifact() throws NonUniqueResultException, NoResolvedResultException {
return asSingle(MavenResolvedArtifact.class);
}
@Override
public <RETURNTYPE> RETURNTYPE[] as(Class<RETURNTYPE> returnTypeClass) throws IllegalArgumentException,
UnsupportedOperationException {
Validate.notNull(returnTypeClass, "Return type class must not be null");
final FormatProcessor<? super MavenResolvedArtifact, RETURNTYPE> processor = FormatProcessors.find(
MavenResolvedArtifact.class, returnTypeClass);
@SuppressWarnings("unchecked")
final RETURNTYPE[] array = (RETURNTYPE[]) Array.newInstance(returnTypeClass, artifacts.size());
int i = 0;
for (final MavenResolvedArtifact artifact : artifacts) {
array[i++] = processor.process(artifact, returnTypeClass);
}
return array;
}
@Override
public <RETURNTYPE> List<RETURNTYPE> asList(Class<RETURNTYPE> returnTypeClass) throws IllegalArgumentException, UnsupportedOperationException {
return Arrays.asList(as(returnTypeClass));
}
@Override
public <RETURNTYPE> RETURNTYPE asSingle(Class<RETURNTYPE> type) throws IllegalArgumentException,
UnsupportedOperationException, NonUniqueResultException,
NoResolvedResultException {
return getSingle(as(type));
}
private <RETURNTYPE> RETURNTYPE getSingle(RETURNTYPE[] array) throws IllegalArgumentException,
NoResolvedResultException, NonUniqueResultException {
Validate.notNull(array, "Array must not be null");
if (array.length == 0) {
throw new NoResolvedResultException("Unable to resolve dependencies, none of them were found.");
}
if (array.length != 1) {
StringBuilder sb = new StringBuilder();
for (RETURNTYPE artifact : array) {
sb.append(artifact).append("\n");
}
// delete last two characters
if (sb.lastIndexOf("\n") != -1) {
sb.deleteCharAt(sb.length() - 1);
}
throw new NonUniqueResultException(
MessageFormat
.format(
"Resolution resolved more than a single artifact ({0} artifact(s)), unable to determine which one should used.\nComplete list of resolved artifacts:\n{1}"
,
array.length, sb));
}
return array[0];
}
}