package com.google.appengine.tools.mapreduce;
import com.google.appengine.tools.cloudstorage.GcsFilename;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
/**
* An ordered list of files in GCS.
*/
public final class GoogleCloudStorageFileSet implements Serializable {
private static final long serialVersionUID = -3864142913836657244L;
private final String bucketName;
private final List<String> fileNames;
public GoogleCloudStorageFileSet(String bucketName, List<String> fileNames) {
this.bucketName = Preconditions.checkNotNull(bucketName);
this.fileNames = ImmutableList.copyOf(fileNames);
}
public int getNumFiles() {
return getFileNames().size();
}
public GcsFilename getFile(int i) {
if (i < 0 || i >= getNumFiles()) {
throw new IllegalArgumentException("Invalid file number: " + i);
}
return new GcsFilename(getBucketName(), getFileNames().get(i));
}
public List<GcsFilename> getFiles() {
List<GcsFilename> result = new ArrayList<>(getFileNames().size());
for (String name : getFileNames()) {
result.add(new GcsFilename(getBucketName(), name));
}
return result;
}
@Override
public String toString() {
return "GoogleCloudStorageFileSet [bucketName=" + getBucketName() + ", fileNames="
+ getFileNames() + "]";
}
@Override
public int hashCode() {
return Objects.hash(bucketName, fileNames);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
return Objects.equals(bucketName, ((GoogleCloudStorageFileSet) obj).bucketName)
&& Objects.equals(fileNames, ((GoogleCloudStorageFileSet) obj).fileNames);
}
public String getBucketName() {
return bucketName;
}
public List<String> getFileNames() {
return fileNames;
}
}