Spring Data Neo4j 4.0中的Neo4j TimeTree [英] Neo4j TimeTree in Spring Data Neo4j 4.0
本文介绍了Spring Data Neo4j 4.0中的Neo4j TimeTree的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试在我的spring数据neo4j 4.0.0项目中使用时间树库.
I'm trying to utilize the timetree library in my spring data neo4j 4.0.0 project.
如本页中所述， https://github.com/graphaware/neo4j-timetree，我编辑了neo4j.properties文件以启用自动事件附加功能，将时间树依赖项添加到gradle中，并在具有Long数据类型的事件节点中设置属性"creationDate".尽管一切看起来都应有，但仍不会创建任何时间树.
As elaborated in this page, https://github.com/graphaware/neo4j-timetree, I've edited my neo4j.properties file to enable the auto event attaching, add timetree dependency to my gradle, and set a property 'creationDate' in the event node with Long data type. Albeit everything looks as it should be, it still doesn't create any timetree.
这是我的neo4j.property文件:
Hereby is my neo4j.property file:
# Runtime must be enabled like this
com.graphaware.runtime.enabled=true
# A Runtime module that takes care of attaching the events like this (TT is the ID of the module)
com.graphaware.module.TT.1=com.graphaware.module.timetree.module.TimeTreeModuleBootstrapper
# Nodes which represent events and should be attached automatically have to be defined
com.graphaware.module.TT.event=hasLabel('StructureVersionChange'),hasLabel('RuleVersionChange'),hasLabel('FilterVersionChange')
# Optionally, a property on the event nodes that represents the the time (long) at which the event took place must be specified (defaults to "timestamp")
com.graphaware.module.TT.timestamp=creationDate
# Optionally, a resolution can be specified (defaults to DAY)
com.graphaware.module.TT.resolution=SECOND
# Optionally, a time zone can be specified (defaults to UTC)
com.graphaware.module.TT.timezone=CEST
# Optionally, a relationship type with which the events will be attached to the tree can be specified (defaults to AT_TIME)
com.graphaware.module.TT.relationship=CREATED_ON
# autoAttach must be set to true
com.graphaware.module.TT.autoAttach=true
实际上，在此之前，我尝试为我的项目使用Timetree的JAVA API版本，但是后来我对timetree构造函数的参数类型(即Node)感到非常困惑.而在春季，我的节点具有其类的类型.
Actually, before this I tried to use JAVA API version of Timetree for my project, but then I was really confused by the parameter type of the timetree constructor, which is Node. Whereas, in spring my Nodes have types of their classes.
预先感谢您的建议，我们将不胜感激！
Thank you in advance and your suggestion would be really appreciated!
neo4j.properties
neo4j.properties
# Runtime must be enabled like this
com.graphaware.runtime.enabled=true
# A Runtime module that takes care of attaching the events like this (TT is the ID of the module)
com.graphaware.module.TT.1=com.graphaware.module.timetree.module.TimeTreeModuleBootstrapper
# Nodes which represent events and should be attached automatically have to be defined
com.graphaware.module.TT.event=hasLabel('FilterVersionChange') || hasLabel('StructureVersionChange') || hasLabel('CodeUnitVersionChange') || hasLabel('RuleVersionChange') || hasLabel('EpisodeVersion')
# Optionally, a property on the event nodes that represents the the time (long) at which the event took place must be specified (defaults to "timestamp")
com.graphaware.module.TT.timestamp=creationDate
# Optionally, a resolution can be specified (defaults to DAY)
com.graphaware.module.TT.resolution=SECOND
# Optionally, a time zone can be specified (defaults to UTC)
com.graphaware.module.TT.timezone=CEST
# Optionally, a relationship type with which the events will be attached to the tree can be specified (defaults to AT_TIME)
com.graphaware.module.TT.relationship=CREATED_ON
# autoAttach must be set to true
com.graphaware.module.TT.autoAttach=true
data/log/neo4j.0.0
data/log/neo4j.0.0
May 17, 2015 4:07:42 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.18.1 02/19/2014 03:28 AM'
May 17, 2015 4:07:42 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.18.1 02/19/2014 03:28 AM'
May 17, 2015 4:07:43 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.18.1 02/19/2014 03:28 AM'
May 17, 2015 4:11:39 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.18.1 02/19/2014 03:28 AM'
May 17, 2015 4:11:39 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.18.1 02/19/2014 03:28 AM'
May 17, 2015 4:11:39 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.18.1 02/19/2014 03:28 AM'
May 17, 2015 4:28:49 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.18.1 02/19/2014 03:28 AM'
May 17, 2015 4:28:49 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.18.1 02/19/2014 03:28 AM'
May 17, 2015 4:28:49 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.18.1 02/19/2014 03:28 AM'
data/graph.db/messages
data/graph.db/messages
2015-05-17 14:28:46.537+0000 INFO [o.n.k.i.DiagnosticsManager]: --- INITIALIZED diagnostics START ---
2015-05-17 14:28:46.538+0000 INFO [o.n.k.i.DiagnosticsManager]: Neo4j Kernel properties:
2015-05-17 14:28:46.541+0000 INFO [o.n.k.i.DiagnosticsManager]: com.graphaware.module.TT.resolution=DAY
2015-05-17 14:28:46.541+0000 INFO [o.n.k.i.DiagnosticsManager]: com.graphaware.module.TT.timestamp=creationDate
2015-05-17 14:28:46.541+0000 INFO [o.n.k.i.DiagnosticsManager]: com.graphaware.module.TT.relationship=CREATED_ON
2015-05-17 14:28:46.541+0000 INFO [o.n.k.i.DiagnosticsManager]: com.graphaware.module.TT.event=hasLabel('FilterVersionChange') || hasLabel('ArchitectureUnitVersionChange') || hasLabel('CodeUnitVersionChange') || hasLabel('RuleVersionChange') || hasLabel('EpisodeVersion')
2015-05-17 14:28:46.541+0000 INFO [o.n.k.i.DiagnosticsManager]: store_dir=C:\NEO4J-~1.1\data\graph.db
2015-05-17 14:28:46.541+0000 INFO [o.n.k.i.DiagnosticsManager]: com.graphaware.runtime.enabled=true
2015-05-17 14:28:46.541+0000 INFO [o.n.k.i.DiagnosticsManager]: com.graphaware.module.TT.autoAttach=true
2015-05-17 14:28:46.541+0000 INFO [o.n.k.i.DiagnosticsManager]: remote_shell_enabled=true
2015-05-17 14:28:46.541+0000 INFO [o.n.k.i.DiagnosticsManager]: com.graphaware.module.TT.timezone=CEST
2015-05-17 14:28:46.541+0000 INFO [o.n.k.i.DiagnosticsManager]: com.graphaware.module.TT.1=com.graphaware.module.timetree.module.TimeTreeModuleBootstrapper
2015-05-17 14:28:46.544+0000 INFO [o.n.k.i.DiagnosticsManager]: Diagnostics providers:
2015-05-17 14:28:46.544+0000 INFO [o.n.k.i.DiagnosticsManager]: org.neo4j.kernel.configuration.Config
...
...
2015-05-17 14:28:48.656+0000 INFO [o.n.k.i.DiagnosticsManager]: --- STARTED diagnostics for KernelDiagnostics:StoreFiles END ---
2015-05-17 14:28:48.696+0000 INFO [o.n.k.EmbeddedGraphDatabase]: Database is now ready
2015-05-17 14:28:48.696+0000 INFO [o.n.s.d.LifecycleManagingDatabase]: Successfully started database
2015-05-17 14:28:48.699+0000 INFO [o.n.k.i.DiagnosticsManager]: --- SERVER STARTED START ---
2015-05-17 14:28:48.736+0000 INFO [o.n.s.CommunityNeoServer]: Starting HTTP on port :7474 with 8 threads available
2015-05-17 14:28:48.872+0000 INFO [o.n.s.CommunityNeoServer]: Enabling HTTPS on port :7473
2015-05-17 14:28:48.989+0000 INFO [o.n.s.w.Jetty9WebServer]: Mounting static content at [/webadmin] from [webadmin-html]
2015-05-17 14:28:49.023+0000 INFO [o.n.s.w.Jetty9WebServer]: Mounting static content at [/browser] from [browser]
2015-05-17 14:28:49.956+0000 INFO [o.n.s.CommunityNeoServer]: Server started on: http://localhost:7474/
2015-05-17 14:28:49.956+0000 INFO [o.n.s.CommunityNeoServer]: Remote interface ready and available at [http://localhost:7474/]
2015-05-17 14:28:49.956+0000 INFO [o.n.k.i.DiagnosticsManager]: --- SERVER STARTED END ---
类实体
@NodeEntity
public class FilterVersionChange extends UnitVersion {
@GraphId
private Long id;
public FilterVersionChange() {
super();
}
public FilterVersionChange(String description, Date creationDate)
{
super(description, creationDate);
}
@Relationship(type="CONTAINS", direction = Relationship.OUTGOING)
private Set<FilterState> filterStates;
@Relationship(type="PREVIOUS", direction = Relationship.OUTGOING)
private FilterVersionChange previousFilterVersionChange;
@Relationship(type="REFERENCES", direction = Relationship.OUTGOING)
private FilterVersionChange referencedFilterVersionChange;
@Relationship(type="ADDED", direction = Relationship.OUTGOING)
private Set<FilterState> newFilterStates;
@Relationship(type="DELETED", direction = Relationship.OUTGOING)
private Set<FilterState> deletedFilterStates;
@Relationship(type="MODIFIED", direction = Relationship.OUTGOING)
private Set<ModifiedUnitState> modifiedFilterStates;
public void contains(Set<FilterState> filterStates) {
this.filterStates = filterStates;
}
public void previous(FilterVersionChange previousFilterVersionChange) {
this.previousFilterVersionChange = previousFilterVersionChange;
}
public void references(FilterVersionChange referencedFilterVersionChange) {
this.referencedFilterVersionChange = referencedFilterVersionChange;
}
public void added(Set<FilterState> newFilterStates) {
this.newFilterStates = newFilterStates;
}
public void deleted(Set<FilterState> deletedFilterStates) {
this.deletedFilterStates = deletedFilterStates;
}
public void modified(Set<ModifiedUnitState> modifiedFilterStates) {
this.modifiedFilterStates = modifiedFilterStates;
}
}
存储库
@Repository
public interface FilterVersionRepository extends GraphRepository<FilterVersion> {
@Query("MATCH (project:Project {name:{0}})-[:HAS_FILTER_VERSION]->(filterVersion:FilterVersion {name:{1}}) RETURN filterVersion")
FilterVersion findFilterVersionByName(String projectName, String filterVersionName);
}
呼叫者功能
public FilterVersionChange createNewFilterVersionChange(String projectName,
String filterVersionName,
String filterVersionChangeDescription,
Set<FilterState> filterStates)
{
FilterVersion filterVersion = filterVersionRepository.findFilterVersionByName(projectName, filterVersionName);
if(filterVersion != null)
{
for(FilterState filterState : filterStates)
{
Filter filter = new Filter(filterState.getMatchingString(), filterState.getMatchingType());
filterState.stateOf(filter);
}
Set<FilterVersionChange> filterVersionChanges = new HashSet<FilterVersionChange>();
FilterVersionChange filterVersionChange = new FilterVersionChange(filterVersionChangeDescription, new Date());
filterVersionChange.contains(filterStates);
filterVersionChange.added(filterStates);
filterVersionChanges.add(filterVersionChange);
filterVersion.tracks(filterVersionChanges);
filterVersionRepository.save(filterVersion);
return filterVersionChange;
}
else
{
return null;
}
}
FilterVersion.class
FilterVersion.class
@NodeEntity
public class FilterVersion {
@GraphId
private Long id;
private String name;
private String description;
private Date creationDate;
public FilterVersion() {
}
public FilterVersion(String name, String description, Date creationDate) {
this.name = name;
this.description = description;
this.creationDate = creationDate;
}
@Relationship(type = "TRACKS", direction = Relationship.OUTGOING)
private Set<FilterVersionChange> filterVersionChanges;
@Relationship(type = "HAS_FILTER_VERSION", direction = Relationship.INCOMING)
private Project project;
public void setName(String name) {
this.name = name;
}
public void setDescription(String description) {
this.description = description;
}
public void setCreationDate(Date creationDate) {
this.creationDate = creationDate;
}
public void tracks(Set<FilterVersionChange> filterVersionChanges) {
this.filterVersionChanges = filterVersionChanges;
}
public void belongsTo(Project project) {
this.project = project;
}
public Project getProject() {
return project;
}
}
UnitVersion.class
UnitVersion.class
@NodeEntity
public class UnitVersion {
@GraphId
protected Long id;
private String description;
private Long creationDate;
public UnitVersion() {
}
public UnitVersion(String description, Date creationDate) {
this.description = description;
this.creationDate = creationDate.getTime();
}
@Relationship(type = "MAPPED_ON", direction = Relationship.OUTGOING)
private UnitVersion unitVersion;
public void setDescription(String description) {
this.description = description;
}
public void setCreationDate(Date creationDate) {
this.creationDate = creationDate.getTime();
}
public void mappedOn(UnitVersion unitVersion) {
this.unitVersion = unitVersion;
}
}
推荐答案
仅当您以编程方式使用时间树时，依赖项才有用.如果您的应用程序是在Neo4j服务器上运行的，则需要下载并保存到Neo4j服务器插件目录中:
The dependency is only useful if you're using the timetree programatically. If your application is running against a Neo4j server, then you need to download and save to your Neo4j server plugins directory:
a)GraphAware框架(选择社区还是企业)
a) The GraphAware framework (choose either Community or Enterprise)
b)TimeTree模块
b) The TimeTree module
两者都可以从 http://graphaware.com/products/
否则，即使使用neo4j.properties中的配置，GraphAware Runtime也不会启动，并且时间树将无法工作.
Without this, even with a configuration in neo4j.properties, the GraphAware Runtime isn't started and the timetree will not work.
如果要通过测试运行代码，则需要包括TimeTree和GraphAware Runtime的依赖关系，并使用以下代码自行启动GraphAware Runtime:
If you want to run your code via a test, then you need to include the dependencies for the TimeTree and GraphAware Runtime and start the GraphAware Runtime yourself, with code such as:
GraphAwareRuntime runtime = GraphAwareRuntimeFactory.createRuntime(getDatabase());
runtime.registerModule(new TimeTreeModule("timetree",
TimeTreeConfiguration
.defaultConfiguration()
.with(new NodeInclusionPolicy() {
@Override
public boolean include(Node node) {
return node.hasLabel(DynamicLabel.label("User"));
}
})
})
.withRelationshipType(DynamicRelationshipType.withName("CREATED_ON"))
.withTimeZone(DateTimeZone.forTimeZone(TimeZone.getTimeZone("GMT+1")))
.withTimestampProperty("createdOn")
.withResolution(Resolution.DAY)
,
getDatabase()));
runtime.start();
然后您可以编写诸如
@Test
public void shouldSaveUser()
{
User user = new User( "Michal" );
user.setCreatedOn(1431937636995l);
userRepository.save( user );
assertSameGraph( getDatabase(), "CREATE (u:User:Person {name:'Michal', createdOn:1431937636995})," +
"(root:TimeTreeRoot)," +
"(root)-[:FIRST]->(year:Year {value:2015})," +
"(root)-[:CHILD]->(year)," +
"(root)-[:LAST]->(year)," +
"(year)-[:FIRST]->(month:Month {value:5})," +
"(year)-[:CHILD]->(month)," +
"(year)-[:LAST]->(month)," +
"(month)-[:FIRST]->(day:Day {value:18})," +
"(month)-[:CHILD]->(day)," +
"(month)-[:LAST]->(day)," +
"(day)<-[:CREATED_ON]-(u)"
);
}
这篇关于Spring Data Neo4j 4.0中的Neo4j TimeTree的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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