i try to distribute entity with policy.
public class JPAObjectDistributionPolicy implements DistributionPolicy {
public String distribute(Object object, List<String> slices, Object
context) {
return slices.get(((JPAObject) object).getDistributeFactor()
% slices.size());
}
}
sometime it will cause error. but Data class is extend from JPAObject class.
after restart websphere application server.it's will work fine.
another question:
after modify JPAObjectDistributionPolicy code.
JPAObjectDistributionPolicy can't be changed by deploy application,must
restart server.
please help me.
Caused by: <openjpa-2.2.1.1-SNAPSHOT-r422266:1438134 nonfatal general error>
org.apache.openjpa.persistence.PersistenceException:
com.plasticmummy.ufsc20.entity.Data incompatible with
com.plasticmummy.ufsc20.entity.JPAObject
at
org.apache.openjpa.kernel.BrokerImpl.beforeCompletion(BrokerImpl.java:2002)
at
com.ibm.ws.uow.ComponentContextSynchronizationWrapper.beforeCompletion(ComponentContextSynchronizationWrapper.java:65)
at
com.ibm.tx.jta.impl.RegisteredSyncs.coreDistributeBefore(RegisteredSyncs.java:291)
at
com.ibm.ws.tx.jta.RegisteredSyncs.distributeBefore(RegisteredSyncs.java:153)
at
com.ibm.ws.tx.jta.TransactionImpl.prePrepare(TransactionImpl.java:2339)
at
com.ibm.ws.tx.jta.TransactionImpl.stage1CommitProcessing(TransactionImpl.java:558)
at
com.ibm.tx.jta.impl.TransactionImpl.processCommit(TransactionImpl.java:1015)
... 81 more
Caused by: java.lang.ClassCastException: com.plasticmummy.ufsc20.entity.Data
incompatible with com.plasticmummy.ufsc20.entity.JPAObject
at
com.plasticmummy.ufsc20.common.slice.distribution.policy.JPAObjectDistributionPolicy.distribute(JPAObjectDistributionPolicy.java:12)
at
org.apache.openjpa.slice.SliceImplHelper.getSlicesByPolicy(SliceImplHelper.java:67)
at
org.apache.openjpa.slice.jdbc.DistributedJDBCStoreManager.findSliceNames(DistributedJDBCStoreManager.java:138)
at
org.apache.openjpa.slice.jdbc.DistributedJDBCStoreManager.bin(DistributedJDBCStoreManager.java:343)
at
org.apache.openjpa.slice.jdbc.DistributedJDBCStoreManager.flush(DistributedJDBCStoreManager.java:258)
at
org.apache.openjpa.kernel.DelegatingStoreManager.flush(DelegatingStoreManager.java:131)
at org.apache.openjpa.kernel.BrokerImpl.flush(BrokerImpl.java:2178)
at org.apache.openjpa.kernel.BrokerImpl.flushSafe(BrokerImpl.java:2076)
at
org.apache.openjpa.kernel.BrokerImpl.beforeCompletion(BrokerImpl.java:1994)
... 87 more
@MappedSuperclass
public abstract class JPAObject implements Serializable {
private static final long serialVersionUID = 1L;
public static final int ID_LENGTH = 32;
@Column(length = ID_LENGTH)
@Id
@GeneratedValue(strategy = GenerationType.AUTO, generator =
Generator.UUID_TYPE4_HEX)
private String id;
@Version
private Long version;
public static final int STATUSOFENTITY_LENGTH = 8;
@Enumerated(EnumType.STRING)
@Column(length = STATUSOFENTITY_LENGTH)
@Index(enabled = true, unique = false)
private StatusOfEntity statusOfEntity;
private Integer distributeFactor;
public String getId() {
return id;
}
public StatusOfEntity getStatusOfEntity() {
return statusOfEntity;
}
public void setStatusOfEntity(StatusOfEntity statusOfEntity) {
this.statusOfEntity = statusOfEntity;
}
public void setId(String id) {
this.id = id;
}
public Long getVersion() {
return version;
}
public void setVersion(Long version) {
this.version = version;
}
public Integer getDistributeFactor() {
return distributeFactor;
}
public void setDistributeFactor(Integer distributeFactor) {
this.distributeFactor = distributeFactor;
}
}
@Entity
@Table(name = "T_DATA", schema = "UFSC20")
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
public class Data extends JPAObject {
private static final long serialVersionUID = 1L;
@Transient
public static final int CONTENT_LENGTH = 6000;
@Column(length = CONTENT_LENGTH)
@Index
private String content;
@Transient
public static final int TITLE_LENGTH = 1000;
@Column(length = TITLE_LENGTH)
@Index
private String title;
@Transient
public static final int LINK_LENGTH = 1000;
@Column(length = LINK_LENGTH)
@Index
private String link;
@Transient
public static final int UNID_LENGTH = 1000;
@Column(length = UNID_LENGTH)
@Index
private String unid;
@Temporal(TemporalType.TIMESTAMP)
@Index
private Date date;
@Transient
public static final int PROJECT_LENGTH = 200;
@Column(length = PROJECT_LENGTH)
@Index
private String project;
@Transient
public static final int CATEGORY_LENGTH = 200;
@Column(length = CATEGORY_LENGTH)
@Index
private String category;
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy =
"data")
private Set<ScopeUser> scopeUsers;
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy =
"data")
private Set<ScopeGroup> scopeGroups;
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy =
"data")
private Set<ScopeRole> scopeRoles;
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getLink() {
return link;
}
public void setLink(String link) {
this.link = link;
}
public String getCategory() {
return category;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public void setCategory(String category) {
this.category = category;
}
public String getUnid() {
return unid;
}
public void setUnid(String unid) {
this.unid = unid;
}
public Set<ScopeUser> getScopeUsers() {
return scopeUsers;
}
public void setScopeUsers(Set<ScopeUser> scopeUsers) {
this.scopeUsers = scopeUsers;
}
public Set<ScopeGroup> getScopeGroups() {
return scopeGroups;
}
public void setScopeGroups(Set<ScopeGroup> scopeGroups) {
this.scopeGroups = scopeGroups;
}
public Set<ScopeRole> getScopeRoles() {
return scopeRoles;
}
public void setScopeRoles(Set<ScopeRole> scopeRoles) {
this.scopeRoles = scopeRoles;
}
public String getProject() {
return project;
}
public void setProject(String project) {
this.project = project;
}
}
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