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#$@text#$@
<p>数据抓取器，抓取监控信息并存储到DataObject中。</p>

<p><strong>doGrab方法</strong></p>

<p>&nbsp;&nbsp;&nbsp; 每一个数据抓取器应重写doGrab方法，用于抓取数据，数据保存到Map中并是doGrab的返回值，以key-value的形式存储，其中key对应于DataObject的相应字段属性。</p>

<p><strong>dataCreateTime属性</strong></p>

<p>&nbsp;&nbsp;&nbsp; <strong>dataCreateTime</strong>属性是约定的属性，DataObject应该也有对应的字段，<strong>dataCreateTime</strong>一般是由启动抓取时的调用者设置的，这个字段抓取器一般不用修改。</p>
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actions
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xworker.lang.MetaDescriptor3/@actions
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run
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xworker.app.monitor.DataGraberScheduler
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runDataGraberScheduler
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svarScope
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xworker.lang.actions.Actions/@JavaAction
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false
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doGrab
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xworker.lang.actions.Actions/@NOOP
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false
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false
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false
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name
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sdescriptors
xworker.lang.MetaDescriptor3/@attribute
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label
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sdescriptors
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refDataGraber
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dataSelector
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true
ssize
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sreadOnly
false
sinheritDescription
false
sdescription
<p>如果不为空表示使用引用的数据抓取器。</p>
svalidateAllowBlank
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true
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snotXmlAttribute
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sdescriptors
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dataObject
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dataSelector
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<p>数据对象的路径，优先级大于DataObjects子节点。</p>
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sdescriptors
xworker.lang.MetaDescriptor3/@attribute
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description
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sdescriptors
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actions
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Actions
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xworker.lang.MetaDescriptor2/@thing
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xworker.lang.actions.Actions
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#$@text#$@
<p>动作集合，通过子节点可以添加各种动作，动作通常是一个可执行的程序。</p>
<p>事物的第一个动作集合的子事物才可以作为事物的行为，第二个及其他动作集合就不能作为事物的行为使用了，事物的行为默认找第一个动作集合。</p>
<p>事物的run方法一般是这个事物转化为动作之后执行的方法。</p>
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actions
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动作
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DataObjects
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public
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<p>用于定义数据对象的节点，只有第一个节点生效。</p>
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sth_registMyChilds
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