GridFSFile (mongo-java-driver 3.3.0-query-log-max-size API)

java.lang.Object
- com.mongodb.gridfs.GridFSFile

所有已实现的接口:

DBObject, BSONObject

直接已知子类:

GridFSDBFile, GridFSInputFile
```
public abstract class GridFSFile
extends java.lang.Object
implements DBObject
```
The abstract class representing a GridFS file.

MongoDB documentation

GridFS

构造器概要

构造器
构造器和说明

GridFSFile()

构造器
构造器和说明
`GridFSFile()`

方法概要

所有方法实例方法具体方法已过时的方法
限定符和类型	方法和说明
`boolean`	`containsField(java.lang.String s)` Checks if this object contains a field with the given name.
`boolean`	`containsKey(java.lang.String key)` 已过时。
`java.lang.Object`	`get(java.lang.String key)` Gets a field from this object by a given name.
`java.util.List<java.lang.String>`	`getAliases()` Gets the aliases from the metadata. note: to set aliases, call `put(String, Object)` with `"aliases" , List<String>`.
`long`	`getChunkSize()` Gets the size of a chunk.
`java.lang.String`	`getContentType()` Gets the content type.
`java.lang.String`	`getFilename()` Gets the filename.
`protected GridFS`	`getGridFS()` Gets the GridFS associated with this file
`java.lang.Object`	`getId()` Gets the id.
`long`	`getLength()` Gets the file's length.
`java.lang.String`	`getMD5()` Gets the observed MD5 during transfer
`DBObject`	`getMetaData()` Gets the file metadata.
`java.util.Date`	`getUploadDate()` Gets the upload date.
`boolean`	`isPartialObject()` Whether `DBObject.markAsPartialObject()` was ever called only matters if you are going to upsert and do not want to risk losing fields.
`java.util.Set<java.lang.String>`	`keySet()` Returns this object's fields' names
`void`	`markAsPartialObject()` If this object was retrieved with only some fields (using a field filter) this method will be called to mark it as such.
`int`	`numChunks()` Returns the number of chunks that store the file data.
`java.lang.Object`	`put(java.lang.String key, java.lang.Object v)` Sets a name/value pair in this object.
`void`	`putAll(BSONObject o)` Sets all key/value pairs from an object into this object
`void`	`putAll(java.util.Map m)` Sets all key/value pairs from a map into this object
`java.lang.Object`	`removeField(java.lang.String key)` Removes a field with a given name from this object.
`void`	`save()` Saves the file entry to the files collection
`protected void`	`setGridFS(GridFS fs)` Sets the GridFS associated with this file.
`void`	`setMetaData(DBObject metadata)` Gets the file metadata.
`java.util.Map<?,?>`	`toMap()` Returns a map representing this BSONObject.
`java.lang.String`	`toString()`
`void`	`validate()` Verifies that the MD5 matches between the database and the local file.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造器详细资料
  - GridFSFile
```
public GridFSFile()
```
- 方法详细资料
  - save
```
public void save()
```
    Saves the file entry to the files collection
    
    抛出:
    
    MongoException - if there's a failure
  - validate
```
public void validate()
```
    Verifies that the MD5 matches between the database and the local file. This should be called after transferring a file.
    
    抛出:
    
    MongoException - if there's a failure
  - numChunks
```
public int numChunks()
```
    Returns the number of chunks that store the file data.
    
    返回:
    
    number of chunks
  - getId
```
public java.lang.Object getId()
```
    Gets the id.
    
    返回:
    
    the id of the file.
  - getFilename
```
public java.lang.String getFilename()
```
    Gets the filename.
    
    返回:
    
    the name of the file
  - getContentType
```
public java.lang.String getContentType()
```
    Gets the content type.
    
    返回:
    
    the content type
  - getLength
```
public long getLength()
```
    Gets the file's length.
    
    返回:
    
    the length of the file
  - getChunkSize
```
public long getChunkSize()
```
    Gets the size of a chunk.
    
    返回:
    
    the chunkSize
  - getUploadDate
```
public java.util.Date getUploadDate()
```
    Gets the upload date.
    
    返回:
    
    the date
  - getAliases
```
public java.util.List<java.lang.String> getAliases()
```
    Gets the aliases from the metadata. note: to set aliases, call put(String, Object) with "aliases" , List<String>.
    
    返回:
    
    list of aliases
  - getMetaData
```
public DBObject getMetaData()
```
    Gets the file metadata.
    
    返回:
    
    the metadata
  - setMetaData
```
public void setMetaData(DBObject metadata)
```
    Gets the file metadata.
    
    参数:
    
    metadata - metadata to be set
  - getMD5
```
public java.lang.String getMD5()
```
    Gets the observed MD5 during transfer
    
    返回:
    
    md5
  - put
```
public java.lang.Object put(java.lang.String key,
                            java.lang.Object v)
```
    从接口复制的说明: BSONObject
    
    Sets a name/value pair in this object.
    
    指定者:
    
    put 在接口中 BSONObject
    
    参数:
    
    key - Name to set
    
    v - Corresponding value
    
    返回:
    
    the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key.)
  - get
```
public java.lang.Object get(java.lang.String key)
```
    从接口复制的说明: BSONObject
    
    Gets a field from this object by a given name.
    
    指定者:
    
    get 在接口中 BSONObject
    
    参数:
    
    key - The name of the field fetch
    
    返回:
    
    The field, if found
  - containsKey
```
@Deprecated
public boolean containsKey(java.lang.String key)
```
    已过时。
    
    从接口复制的说明: BSONObject
    
    Deprecated
    
    指定者:
    
    containsKey 在接口中 BSONObject
    
    参数:
    
    key - the key to check
    
    返回:
    
    True if the key is present
  - containsField
```
public boolean containsField(java.lang.String s)
```
    从接口复制的说明: BSONObject
    
    Checks if this object contains a field with the given name.
    
    指定者:
    
    containsField 在接口中 BSONObject
    
    参数:
    
    s - Field name for which to check
    
    返回:
    
    True if the field is present
  - keySet
```
public java.util.Set<java.lang.String> keySet()
```
    从接口复制的说明: BSONObject
    
    Returns this object's fields' names
    
    指定者:
    
    keySet 在接口中 BSONObject
    
    返回:
    
    The names of the fields in this object
  - isPartialObject
```
public boolean isPartialObject()
```
    从接口复制的说明: DBObject
    
    Whether DBObject.markAsPartialObject() was ever called only matters if you are going to upsert and do not want to risk losing fields.
    
    指定者:
    
    isPartialObject 在接口中 DBObject
    
    返回:
    
    true if this has been marked as a partial object
  - markAsPartialObject
```
public void markAsPartialObject()
```
    从接口复制的说明: DBObject
    
    If this object was retrieved with only some fields (using a field filter) this method will be called to mark it as such.
    
    指定者:
    
    markAsPartialObject 在接口中 DBObject
  - toString
```
public java.lang.String toString()
```
    覆盖:
    
    toString 在类中 java.lang.Object
  - setGridFS
```
protected void setGridFS(GridFS fs)
```
    Sets the GridFS associated with this file.
    
    参数:
    
    fs - gridFS instance
  - getGridFS
```
protected GridFS getGridFS()
```
    Gets the GridFS associated with this file
    
    返回:
    
    gridFS instance
  - putAll
```
public void putAll(BSONObject o)
```
    从接口复制的说明: BSONObject
    
    Sets all key/value pairs from an object into this object
    
    指定者:
    
    putAll 在接口中 BSONObject
    
    参数:
    
    o - the object
  - putAll
```
public void putAll(java.util.Map m)
```
    从接口复制的说明: BSONObject
    
    Sets all key/value pairs from a map into this object
    
    指定者:
    
    putAll 在接口中 BSONObject
    
    参数:
    
    m - the map
  - toMap
```
public java.util.Map<?,?> toMap()
```
    从接口复制的说明: BSONObject
    
    Returns a map representing this BSONObject.
    
    指定者:
    
    toMap 在接口中 BSONObject
    
    返回:
    
    the map
  - removeField
```
public java.lang.Object removeField(java.lang.String key)
```
    从接口复制的说明: BSONObject
    
    Removes a field with a given name from this object.
    
    指定者:
    
    removeField 在接口中 BSONObject
    
    参数:
    
    key - The name of the field to remove
    
    返回:
    
    The value removed from this object

类 GridFSFile

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

GridFSFile

方法详细资料

save

validate

numChunks

getId

getFilename

getContentType

getLength

getChunkSize

getUploadDate

getAliases

getMetaData

setMetaData

getMD5

put

get

containsKey

containsField

keySet

isPartialObject

markAsPartialObject

toString

setGridFS

getGridFS

putAll

putAll

toMap

removeField