flowable实战（六）flowable的意见表和附件表应用

一、act_hi_comment和act_hi_attachment两表表，前者意见表后者是附件表

意见表它里面有一个类型type字段，分别是comment代表意见(这个type可以自定义,例如自定义为：通过/退回/提前终止），缺省提供了comment，event是事件，当你给附件表增加记录时，它就会在意见表同时增加多少条记录，并且type的类型为event。所以取意见时，需要注意这个问题。

（一）act_hi_comment提供了以下方法：

/** Add a comment to a task and/or process instance. */
Comment addComment(String taskId, String processInstanceId, String message);

/** Add a comment to a task and/or process instance with a custom type. */
Comment addComment(String taskId, String processInstanceId, String type, String message);

/** Update a comment to a task and/or process instance. */
void saveComment(Comment comment);

/**
 * Returns an individual comment with the given id. Returns null if no comment exists with the given id.
 */
Comment getComment(String commentId);

/** Removes all comments from the provided task and/or process instance */
void deleteComments(String taskId, String processInstanceId);

/**
 * Removes an individual comment with the given id.
 * 
 * @throws FlowableObjectNotFoundException
 *             when no comment exists with the given id.
 */
void deleteComment(String commentId);

/** The comments related to the given task. */
List<Comment> getTaskComments(String taskId);

/** The comments related to the given task of the given type. */
List<Comment> getTaskComments(String taskId, String type);

/** All comments of a given type. */
List<Comment> getCommentsByType(String type);

/** The all events related to the given task. */
List<Event> getTaskEvents(String taskId);

/**
 * Returns an individual event with the given id. Returns null if no event exists with the given id.
 */
Event getEvent(String eventId);

/** The comments related to the given process instance. */
List<Comment> getProcessInstanceComments(String processInstanceId);

/** The comments related to the given process instance. */
List<Comment> getProcessInstanceComments(String processInstanceId, String type);

（二）附件提供了以下方法：

/**
 * Add a new attachment to a task and/or a process instance and use an input stream to provide the content
 */
Attachment createAttachment(String attachmentType, String taskId, String processInstanceId, String attachmentName, String attachmentDescription, InputStream content);

/**
 * Add a new attachment to a task and/or a process instance and use an url as the content
 */
Attachment createAttachment(String attachmentType, String taskId, String processInstanceId, String attachmentName, String attachmentDescription, String url);

/** Update the name and description of an attachment */
void saveAttachment(Attachment attachment);

/** Retrieve a particular attachment */
Attachment getAttachment(String attachmentId);

/** Retrieve stream content of a particular attachment */
InputStream getAttachmentContent(String attachmentId);

/** The list of attachments associated to a task */
List<Attachment> getTaskAttachments(String taskId);

/** The list of attachments associated to a process instance */
List<Attachment> getProcessInstanceAttachments(String processInstanceId);

/** Delete an attachment */
void deleteAttachment(String attachmentId);

(三）真实应用：

标签：实战,comment,given,task,String,flowable,taskId,附件,type
来源： https://blog.51cto.com/u_10976476/2845650