在自定義包中爲 循環 操作添加迭代器
在 Loop 的軟件包中添加迭代器 action。
將迭代器添加到循環操作
- 要創建迭代器,請將 BotCommand 註釋的命令類型屬性設置爲 迭代器,並將值設置爲迭代器。
- 迭代器需要兩種方法,它們由 HasNext 和 Next 標註定義。
@BotCommand(commandType = BotCommand.CommandType.Iterator)
@CommandPkg(name = "loop.iterators.files",
label = "For each file in folder",
node_label = "for each file and assign file name and extension to {{returnTo}}",
description = "Iterator for each file in folder.",
return_type = DataType.DICTIONARY,
return_sub_type = DataType.STRING,
return_required = true,
return_description = "Note: Access the 'name' key to access file name and 'extension'
key to access the file extension.",
return_label = "Assign file name and extension to this variable")
public class FileLoop extends AbstractCommandFileIterator {
@Idx(index = "1", type = AttributeType.TEXT)
@Pkg(label = "Folder path")
@Inject
@NotEmpty
private String folderPath;
@HasNext
public boolean hasNext() {
return getFileIterator(folderPath).hasNext();
}
@Next
public Value<?> next() {
Map<String, Value> returnValueMap = new HashMap<>();
FileIterator fileIterator = getFileIterator(folderPath);
String fileName = fileIterator.getNext();
returnValueMap.put(FILE_NAME, new StringValue(fileIterator.getFileName(fileName)));
returnValueMap.put(EXTENSION, new StringValue(fileIterator.getExtension(fileName)));
return new DictionaryValue(returnValueMap);
}
public void setFolderPath(String folderPath) {
this.folderPath = folderPath;
}
}