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There is a newer version: 0.52
package org.lumongo.client.command;

import com.google.protobuf.RpcController;
import com.google.protobuf.ServiceException;
import org.lumongo.client.command.base.RoutableCommand;
import org.lumongo.client.command.base.SimpleCommand;
import org.lumongo.client.pool.LumongoConnection;
import org.lumongo.client.result.DeleteResult;
import org.lumongo.cluster.message.Lumongo.DeleteRequest;
import org.lumongo.cluster.message.Lumongo.DeleteResponse;
import org.lumongo.cluster.message.Lumongo.ExternalService;

public abstract class Delete extends SimpleCommand implements RoutableCommand {
	private String indexName;
	private String uniqueId;
	private String fileName;
	private Boolean deleteDocument;
	private Boolean deleteAllAssociated;

	public Delete(String uniqueId, String indexName) {
		this.uniqueId = uniqueId;
		this.indexName = indexName;
	}

	@Override
	public String getUniqueId() {
		return uniqueId;
	}

	protected void setIndexName(String indexName) {
		this.indexName = indexName;
	}

	@Override
	public String getIndexName() {
		return indexName;
	}

	protected Delete setFileName(String fileName) {
		this.fileName = fileName;
		return this;
	}

	protected String getFileName() {
		return fileName;
	}

	protected Delete setDeleteDocument(Boolean deleteDocument) {
		this.deleteDocument = deleteDocument;
		return this;
	}

	protected Boolean getDeleteDocument() {
		return deleteDocument;
	}

	protected Delete setDeleteAllAssociated(Boolean deleteAllAssociated) {
		this.deleteAllAssociated = deleteAllAssociated;
		return this;
	}

	protected Boolean getDeleteAllAssociated() {
		return deleteAllAssociated;
	}

	@Override
	public DeleteRequest getRequest() {
		DeleteRequest.Builder deleteRequestBuilder = DeleteRequest.newBuilder();
		if (uniqueId != null) {
			deleteRequestBuilder.setUniqueId(uniqueId);
		}
		if (indexName != null) {
			deleteRequestBuilder.setIndexName(indexName);
		}
		if (fileName != null) {
			deleteRequestBuilder.setFilename(fileName);
		}
		if (deleteDocument != null) {
			deleteRequestBuilder.setDeleteDocument(deleteDocument);
		}
		if (deleteAllAssociated != null) {
			deleteRequestBuilder.setDeleteAllAssociated(deleteAllAssociated);
		}
		return deleteRequestBuilder.build();
	}

	@Override
	public DeleteResult execute(LumongoConnection lumongoConnection) throws ServiceException {
		ExternalService.BlockingInterface service = lumongoConnection.getService();

		RpcController controller = lumongoConnection.getController();

		DeleteResponse deleteResponse = service.delete(controller, getRequest());

		return new DeleteResult(deleteResponse);
	}

}