Hello,
Does anyone knows why I'm getting the following exception when Blob
field is used ?
The documentation doesn't mention any limits for that data type.
java.lang.IllegalArgumentException: string property content is too
long. It cannot exceed 1000000 characters.
at
com.google.appengine.api.datastore.DatastoreApiHelper.translateError(DatastoreApiHelper.java:33)
at
com.google.appengine.api.datastore.DatastoreApiHelper.makeSyncCall(DatastoreApiHelper.java:60)
at
com.google.appengine.api.datastore.DatastoreServiceImpl$2.run(DatastoreServiceImpl.java:173)
at
com.google.appengine.api.datastore.TransactionRunner.runInTransaction(TransactionRunner.java:30)
at
com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java:161)
at
com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java:141)
at
com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java:133)
at
org.datanucleus.store.appengine.RuntimeExceptionWrappingDatastoreService.put(RuntimeExceptionWrappingDatastoreService.java:93)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.put(DatastorePersistenceHandler.java:165)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.put(DatastorePersistenceHandler.java:124)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.put(DatastorePersistenceHandler.java:119)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.updateObject(DatastorePersistenceHandler.java:492)
at
org.datanucleus.state.JDOStateManagerImpl.flush(JDOStateManagerImpl.java:4576)
at
org.datanucleus.ObjectManagerImpl.flushInternal(ObjectManagerImpl.java:2814)
at org.datanucleus.ObjectManagerImpl.flush(ObjectManagerImpl.java:2754)
at
org.datanucleus.ObjectManagerImpl.preCommit(ObjectManagerImpl.java:2893)
at
org.datanucleus.TransactionImpl.internalPreCommit(TransactionImpl.java:369)
at org.datanucleus.TransactionImpl.commit(TransactionImpl.java:256)
at org.datanucleus.ObjectManagerImpl.close(ObjectManagerImpl.java:801)
Here is the definition of my entity object:
@PersistenceCapable(identityType = IdentityType.APPLICATION,
detachable="true")
public class CacheEntity {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;
@Persistent
private Blob content;
public Key getKey() {
return key;
}
public void setKey(Key key) {
this.key = key;
}
public Blob getContent() {
return content;
}
public void setContent(Blob content) {
this.content = content;
}
}
Regards,
Miroslav
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