我的错误是什么？
What is my mistake?
这是我的rexster.xml文件配置如下
<?xml version="1.0" encoding="UTF-8"?>
<rexster>
<http>
<server-port>8182</server-port>
<server-host>0.0.0.0</server-host>
<base-uri>http://localhost</base-uri>
<web-root>public</web-root>
<character-set>UTF-8</character-set>
<enable-jmx>false</enable-jmx>
<enable-doghouse>true</enable-doghouse>
<max-post-size>2097152</max-post-size>
<max-header-size>8192</max-header-size>
<upload-timeout-millis>30000</upload-timeout-millis>
<thread-pool>
<worker>
<core-size>8</core-size>
<max-size>8</max-size>
</worker>
<kernal>
<core-size>4</core-size>
<max-size>4</max-size>
</kernal>
</thread-pool>
<io-strategy>leader-follower</io-strategy>
</http>
<rexpro>
<server-port>8184</server-port>
<server-host>0.0.0.0</server-host>
<session-max-idle>1790000</session-max-idle>
<session-check-interval>3000000</session-check-interval>
<connection-max-idle>180000</connection-max-idle>
<connection-check-interval>3000000</connection-check-interval>
<enable-jmx>false</enable-jmx>
<thread-pool>
<worker>
<core-size>8</core-size>
<max-size>8</max-size>
</worker>
<kernal>
<core-size>4</core-size>
<max-size>4</max-size>
</kernal>
</thread-pool>
<io-strategy>leader-follower</io-strategy>
</rexpro>
<shutdown-port>8183</shutdown-port>
<shutdown-host>127.0.0.1</shutdown-host>
<script-engine-reset-threshold>-1</script-engine-reset-threshold>
<script-engine-init>data/init.groovy</script-engine-init>
<script-engines>gremlin-groovy</script-engines>
<security>
<authentication>
<type>none</type>
<configuration>
<users>
<user>
<username>rexster</username>
<password>rexster</password>
</user>
</users>
</configuration>
</authentication>
</security>
<graphs>
<graph>
<graph-name>ramgraph</graph-name>
<graph-type>tinkergraph</graph-type>
<graph-mock-tx>false</graph-mock-tx>
<properties>
<storage.backend>cassandra</storage.backend>
<storage.hostname>localhost</storage.hostname>
<storage.buffer-size>100</storage.buffer-size>
</properties>
<extensions>
<allows>
<allow>tp:gremlin</allow>
</allows>
</extensions>
</graph>
<graph>
<graph-name>titanexample</graph-name>
<graphtype>com.thinkaurelius.titan.tinkerpop.rexster.TitanGraphConfiguration</graph-type>
<graph-location>/tmp/titan</graph-location>
<graph-read-only>false</graph-read-only>
<properties>
<storage.backend>local</storage.backend>
<storage.buffer-size>100</storage.buffer-size>
</properties>
<extensions>
<allows>
<allow>tp:gremlin</allow>
</allows>
</extensions>
</graph>
</graphs>
</rexster>
我写了一个 python 客户端，灯泡如下
__author__ = 'rponnapureddy'
from bulbs.config import Config, DEBUG
from bulbs.rexster import Graph
from bulbs.rexster import Graph
# config = Config('http://localhost:8182/graphs/empgraph')
config = Config('http://localhost:8182/graphs/ramgraph')
g = Graph(config)
class inser_class():
ponnapu = g.vertices.create(name="ramnath")
pr = g.vertices.create(name="reddy")
tanu = g.vertices.create(name="brothers")
g.edges.create(pr, "knows", tanu)
# z=g.get_graphml()
#print z
#g.clear()
# print z
我遇到了以下错误。要正确回答我做了什么？
'usr/bin/python2.7 "/home/rpo/Desktop/ramnathreddy/addverices 到 rexsterdefault graph.py"
追溯（最近一次通话）：
文件“/home/rpo/Desktop/ramnath/addverices 到 rexsterdefault graph.py”，第 10 行，在
g = 图（配置）
文件“/usr/local/lib/python2.7/dist-packages/bulbs/rexster/graph.py”，第 56 行，在 init 中
super(Graph, self).init(配置)
文件“/usr/local/lib/python2.7/dist-packages/bulbs/base/graph.py”，第 58 行，在 init 中
self.vertices = self.build_proxy（顶点）
文件“/usr/local/lib/python2.7/dist-packages/bulbs/base/graph.py”，第 124 行，在 build_proxy 中
return self.factory.build_element_proxy(element_class, index_class)
文件“/usr/local/lib/python2.7/dist-packages/bulbs/factory.py”，第 19 行，在 build_element_proxy 中
primary_index = self.get_index(element_class,index_class,index_name)
文件“/usr/local/lib/python2.7/dist-packages/bulbs/factory.py”，第 27 行，在 get_index 中
索引 = index_proxy.get_or_create(index_name)
文件“/usr/local/lib/python2.7/dist-packages/bulbs/rexster/index.py”，第 80 行，在 get_or_create 中
resp = self.client.get_or_create_vertex_index(index_name, index_params)
文件“/usr/local/lib/python2.7/dist-packages/bulbs/rexster/client.py”，第 668 行，在 get_or_create_vertex_index
resp = self.gremlin（脚本，参数）
文件“/usr/local/lib/python2.7/dist-packages/bulbs/rexster/client.py”，第 356 行，在 gremlin 中
return self.request.post(gremlin_path, 参数)
文件“/usr/local/lib/python2.7/dist-packages/bulbs/rest.py”，第 131 行，在 post 中
return self.request(POST, 路径, 参数)
请求中的文件“/usr/local/lib/python2.7/dist-packages/bulbs/rest.py”，第 186 行
return self.response_class(http_resp, self.config)
文件“/usr/local/lib/python2.7/dist- packages/bulbs/rexster/client.py”，第 198 行，在 init 中
self.handle_response（回应）
文件“/usr/local/lib/python2.7/dist-packages/bulbs/rexster/client.py”，第 222 行，在 handle_response 中
response_handler(http_resp)
文件“/usr/local/lib/python2.7/dist-packages/bulbs/rest.py”，第 50 行，在 server_error 中
提高系统错误（http_resp）
SystemError: ({'status': '500', 'transfer-encoding': 'chunked', 'server': 'grizzly/2.2.16', 'connection': 'close', 'date': 'Mon, 16 Mar 2015 11:32:19 GMT', 'access-control-allow-origin': '*', 'content-type': 'application/json'}, '{"message":"","error":"javax.script.ScriptException: groovy.lang.MissingMethodException: No signature of method: groovy.lang.MissingMethodException.rollback() is applicable for argument types: () values: []\nPossible solutions: collect(), collect(groovy.lang.Closure), collect(java.util.Collection, groovy.lang.Closure)","api":{"description":"evaluate an ad-hoc Gremlin script for a graph.","parameters":{"rexster.returnKeys":"an array of element property keys to return (default is to return all element properties)","rexster.showTypes":"displays the properties of the elements with their native data type (default is false)","load":"a list of \'stored procedures\' to execute prior to the \'script\' (if \'script\' is not specified then the last script in this argument will return the values","rexster.offset.end":"end index for a paged set of data to be returned","rexster.offset.start":"start index for a paged set of data to be returned","params": "a map of parameters to bind to the script engine","language":"the gremlin language flavor to use (default to groovy)","script":"the Gremlin script to be evaluated"}},"success":false}')
Process finished with exit code 1'
from bulbs.config import Config, DEBUG
from bulbs.rexster import Graph
from bulbs.titan import Graph
config = Config('http://localhost:8182/graphs/ramgraph')
g = Graph(config)
class inser_class():
ponnapu = g.vertices.create(name="reddy", age="26", state="TELNGANA", mobn="111111111")
pr = g.vertices.create(name="ramnath" ,age="25" , state="TELNGANA", mobn="1111111")
tanu = g.vertices.create (name="ponnapu",age="27",state="AP",mobn="11111111111111")
g.edges.create(pr, "knows", tanu)
g.edges.create(pr, "friends", ponnapu)
g.edges.create(ponnapu, "dontknow",tanu)
这是我的rexster.xml文件配置如下
<?xml version="1.0" encoding="UTF-8"?>
<rexster>
<http>
<server-port>8182</server-port>
<server-host>0.0.0.0</server-host>
<base-uri>http://localhost</base-uri>
<web-root>public</web-root>
<character-set>UTF-8</character-set>
<enable-jmx>false</enable-jmx>
<enable-doghouse>true</enable-doghouse>
<max-post-size>2097152</max-post-size>
<max-header-size>8192</max-header-size>
<upload-timeout-millis>30000</upload-timeout-millis>
<thread-pool>
<worker>
<core-size>8</core-size>
<max-size>8</max-size>
</worker>
<kernal>
<core-size>4</core-size>
<max-size>4</max-size>
</kernal>
</thread-pool>
<io-strategy>leader-follower</io-strategy>
</http>
<rexpro>
<server-port>8184</server-port>
<server-host>0.0.0.0</server-host>
<session-max-idle>1790000</session-max-idle>
<session-check-interval>3000000</session-check-interval>
<connection-max-idle>180000</connection-max-idle>
<connection-check-interval>3000000</connection-check-interval>
<enable-jmx>false</enable-jmx>
<thread-pool>
<worker>
<core-size>8</core-size>
<max-size>8</max-size>
</worker>
<kernal>
<core-size>4</core-size>
<max-size>4</max-size>
</kernal>
</thread-pool>
<io-strategy>leader-follower</io-strategy>
</rexpro>
<shutdown-port>8183</shutdown-port>
<shutdown-host>127.0.0.1</shutdown-host>
<script-engine-reset-threshold>-1</script-engine-reset-threshold>
<script-engine-init>data/init.groovy</script-engine-init>
<script-engines>gremlin-groovy</script-engines>
<security>
<authentication>
<type>none</type>
<configuration>
<users>
<user>
<username>rexster</username>
<password>rexster</password>
</user>
</users>
</configuration>
</authentication>
</security>
<graphs>
<graph>
<graph-name>ramgraph</graph-name>
<graph-type>tinkergraph</graph-type>
<graph-mock-tx>false</graph-mock-tx>
<properties>
<storage.backend>cassandra</storage.backend>
<storage.hostname>localhost</storage.hostname>
<storage.buffer-size>100</storage.buffer-size>
</properties>
<extensions>
<allows>
<allow>tp:gremlin</allow>
</allows>
</extensions>
</graph>
<graph>
<graph-name>titanexample</graph-name>
<graphtype>com.thinkaurelius.titan.tinkerpop.rexster.TitanGraphConfiguration</graph-type>
<graph-location>/tmp/titan</graph-location>
<graph-read-only>false</graph-read-only>
<properties>
<storage.backend>local</storage.backend>
<storage.buffer-size>100</storage.buffer-size>
</properties>
<extensions>
<allows>
<allow>tp:gremlin</allow>
</allows>
</extensions>
</graph>
</graphs>
</rexster>
我写了一个 python 客户端，灯泡如下
__author__ = 'rponnapureddy'
from bulbs.config import Config, DEBUG
from bulbs.rexster import Graph
from bulbs.rexster import Graph
# config = Config('http://localhost:8182/graphs/empgraph')
config = Config('http://localhost:8182/graphs/ramgraph')
g = Graph(config)
class inser_class():
ponnapu = g.vertices.create(name="ramnath")
pr = g.vertices.create(name="reddy")
tanu = g.vertices.create(name="brothers")
g.edges.create(pr, "knows", tanu)
# z=g.get_graphml()
#print z
#g.clear()
# print z
我遇到了以下错误。要正确回答我做了什么？
'usr/bin/python2.7 "/home/rpo/Desktop/ramnathreddy/addverices 到 rexsterdefault graph.py" 追溯（最近一次通话）： 文件“/home/rpo/Desktop/ramnath/addverices 到 rexsterdefault graph.py”，第 10 行，在 g = 图（配置） 文件“/usr/local/lib/python2.7/dist-packages/bulbs/rexster/graph.py”，第 56 行，在 init 中 super(Graph, self).init(配置) 文件“/usr/local/lib/python2.7/dist-packages/bulbs/base/graph.py”，第 58 行，在 init 中 self.vertices = self.build_proxy（顶点） 文件“/usr/local/lib/python2.7/dist-packages/bulbs/base/graph.py”，第 124 行，在 build_proxy 中 return self.factory.build_element_proxy(element_class, index_class) 文件“/usr/local/lib/python2.7/dist-packages/bulbs/factory.py”，第 19 行，在 build_element_proxy 中 primary_index = self.get_index(element_class,index_class,index_name) 文件“/usr/local/lib/python2.7/dist-packages/bulbs/factory.py”，第 27 行，在 get_index 中 索引 = index_proxy.get_or_create(index_name) 文件“/usr/local/lib/python2.7/dist-packages/bulbs/rexster/index.py”，第 80 行，在 get_or_create 中 resp = self.client.get_or_create_vertex_index(index_name, index_params) 文件“/usr/local/lib/python2.7/dist-packages/bulbs/rexster/client.py”，第 668 行，在 get_or_create_vertex_index resp = self.gremlin（脚本，参数） 文件“/usr/local/lib/python2.7/dist-packages/bulbs/rexster/client.py”，第 356 行，在 gremlin 中 return self.request.post(gremlin_path, 参数) 文件“/usr/local/lib/python2.7/dist-packages/bulbs/rest.py”，第 131 行，在 post 中 return self.request(POST, 路径, 参数) 请求中的文件“/usr/local/lib/python2.7/dist-packages/bulbs/rest.py”，第 186 行 return self.response_class(http_resp, self.config) 文件“/usr/local/lib/python2.7/dist- packages/bulbs/rexster/client.py”，第 198 行，在 init 中 self.handle_response（回应） 文件“/usr/local/lib/python2.7/dist-packages/bulbs/rexster/client.py”，第 222 行，在 handle_response 中 response_handler(http_resp) 文件“/usr/local/lib/python2.7/dist-packages/bulbs/rest.py”，第 50 行，在 server_error 中 提高系统错误（http_resp） SystemError: ({'status': '500', 'transfer-encoding': 'chunked', 'server': 'grizzly/2.2.16', 'connection': 'close', 'date': 'Mon, 16 Mar 2015 11:32:19 GMT', 'access-control-allow-origin': '*', 'content-type': 'application/json'}, '{"message":"","error":"javax.script.ScriptException: groovy.lang.MissingMethodException: No signature of method: groovy.lang.MissingMethodException.rollback() is applicable for argument types: () values: []\nPossible solutions: collect(), collect(groovy.lang.Closure), collect(java.util.Collection, groovy.lang.Closure)","api":{"description":"evaluate an ad-hoc Gremlin script for a graph.","parameters":{"rexster.returnKeys":"an array of element property keys to return (default is to return all element properties)","rexster.showTypes":"displays the properties of the elements with their native data type (default is false)","load":"a list of \'stored procedures\' to execute prior to the \'script\' (if \'script\' is not specified then the last script in this argument will return the values","rexster.offset.end":"end index for a paged set of data to be returned","rexster.offset.start":"start index for a paged set of data to be returned","params": "a map of parameters to bind to the script engine","language":"the gremlin language flavor to use (default to groovy)","script":"the Gremlin script to be evaluated"}},"success":false}')
Process finished with exit code 1'
from bulbs.config import Config, DEBUG
from bulbs.rexster import Graph
from bulbs.titan import Graph
config = Config('http://localhost:8182/graphs/ramgraph')
g = Graph(config)
class inser_class():
ponnapu = g.vertices.create(name="reddy", age="26", state="TELNGANA", mobn="111111111")
pr = g.vertices.create(name="ramnath" ,age="25" , state="TELNGANA", mobn="1111111")
tanu = g.vertices.create (name="ponnapu",age="27",state="AP",mobn="11111111111111")
g.edges.create(pr, "knows", tanu)
g.edges.create(pr, "friends", ponnapu)
g.edges.create(ponnapu, "dontknow",tanu)