com.sleepycat.db.DatabaseEntry
com.sleepycat.db.MultipleEntry
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Berkeley DB version 5.3.28 |
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java.lang.Object
public abstract class MultipleEntry
An abstract class representing a DatabaseEntry that holds multiple results
returned by a single Cursor get method. Use one of the concrete
subclasses depending on whether you need:
MultipleDataEntryMultipleKeyDataEntryMultipleRecnoDataEntry
| Method Summary | |
|---|---|
protected boolean |
append_internal(byte[] newdata,
int offset,
int len)
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protected boolean |
append_internal(byte[] newdata,
int offset,
int len,
int recno)
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void |
setUserBuffer(int length,
boolean usermem)
Configures the entry with an application-owned buffer. |
| Methods inherited from class com.sleepycat.db.DatabaseEntry |
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equals, getData, getDataNIO, getOffset, getPartial, getPartialLength, getPartialOffset, getReadOnly, getRecordNumber, getReuseBuffer, getSize, getUserBuffer, getUserBufferLength, hashCode, setData, setData, setDataNIO, setDataNIO, setOffset, setPartial, setPartial, setPartialLength, setPartialOffset, setReadOnly, setRecordNumber, setReuseBuffer, setSize |
| Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
| Method Detail |
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public void setUserBuffer(int length,
boolean usermem)
DatabaseEntry
The data field of the entry must refer to a buffer that is
at least length bytes in length.
If the length of the requested item is less than or equal to that number
of bytes, the item is copied into the memory to which the
data field refers. Otherwise, the size field
is set to the length needed for the requested item, and a
MemoryException is thrown.
Applications can determine the length of a record by setting
length to 0 and calling DatabaseEntry.getSize
on the return value.
setUserBuffer in class DatabaseEntrylength - the length of the buffer
usermem - whether the buffer is owned by the application
protected boolean append_internal(byte[] newdata,
int offset,
int len,
int recno)
throws DatabaseException
DatabaseException
protected boolean append_internal(byte[] newdata,
int offset,
int len)
throws DatabaseException
DatabaseException
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