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java.lang.Objectde.zib.scalaris.operations.ReadOp
public class ReadOp
Operation reading a value.
Constructor Summary | |
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ReadOp(OtpErlangString key)
Constructor |
|
ReadOp(String key)
Constructor |
Method Summary | |
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OtpErlangObject |
getErlang(boolean compressed)
Gets the erlang representation of the operation. |
OtpErlangString |
getKey()
Gets the key the operation is working on (if available) |
OtpErlangObject |
getResult()
Gets the (raw Erlang) result set via Operation.setResult(OtpErlangObject, boolean) . |
boolean |
getResultCompressed()
Determines if the result set via Operation.setResult(OtpErlangObject, boolean) is compressed or not. |
ErlangValue |
processResult()
Processes the result set by Operation.setResult(OtpErlangObject, boolean) . |
ErlangValue |
processResultSingle()
Processes the result set by Operation.setResult(OtpErlangObject, boolean)
assuming that operation was committed. |
void |
setResult(OtpErlangObject resultRaw,
boolean compressed)
Sets the raw erlang result value. |
String |
toString()
|
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public ReadOp(OtpErlangString key)
key
- the key to readpublic ReadOp(String key)
key
- the key to readMethod Detail |
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public OtpErlangObject getErlang(boolean compressed)
Operation
getErlang
in interface Operation
compressed
- whether the value part in the term should be encoded, i.e.
compressed into an Erlang binary, or not
public OtpErlangString getKey()
Operation
getKey
in interface Operation
public void setResult(OtpErlangObject resultRaw, boolean compressed)
Operation
Operation.processResult()
.
setResult
in interface Operation
resultRaw
- the resultcompressed
- whether the value inside the result is compressed or notpublic OtpErlangObject getResult()
Operation
Operation.setResult(OtpErlangObject, boolean)
.
getResult
in interface Operation
public boolean getResultCompressed()
Operation
Operation.setResult(OtpErlangObject, boolean)
is compressed or not.
getResultCompressed
in interface Operation
public ErlangValue processResult() throws NotFoundException, UnknownException
Operation
Operation.setResult(OtpErlangObject, boolean)
.
Note: the created value is not cached!
processResult
in interface Operation
NotFoundException
- if the requested key does not exist
UnknownException
- if any other error occurspublic ErlangValue processResultSingle() throws NotFoundException, KeyChangedException, NotANumberException, NotAListException, AbortException, UnknownException
TransactionSingleOpOperation
Operation.setResult(OtpErlangObject, boolean)
assuming that operation was committed.
In contrast to Operation.processResult()
operations like WriteOp
will throw a proper AbortException
for their commit part instead
of an UnknownException
.
Note: the created value is not cached!
processResultSingle
in interface TransactionSingleOpOperation
NotFoundException
- if the requested key does not exist
KeyChangedException
- if the key did not match old_value
NotANumberException
- if the previously stored value was not a number
NotAListException
- if the previously stored value was no list
AbortException
- if a commit failed
UnknownException
- if any other error occurspublic String toString()
toString
in class Object
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