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## com.sun.mdm.index.survivor.impl
Class DefaultSurvivorHelper

    java.lang.Object
      com.sun.mdm.index.survivor.AbstractSurvivorHelper
          com.sun.mdm.index.survivor.impl.DefaultSurvivorHelper

All Implemented Interfaces:
  java.lang.Cloneable, java.io.Serializable

public class DefaultSurvivorHelper
extends AbstractSurvivorHelper

Default survivor helper implementation, using ePath

See Also:
  Serialized Form

Field Summary
`protected java.util.Map` | `mEPathCache` pre-parse epaths and cache the ePath objects here

Fields inherited from class com.sun.mdm.index.survivor.AbstractSurvivorHelper
`mFieldCache, mStrategyCache`

Constructor Summary
`DefaultSurvivorHelper()` Creates new DefaultSurvivorHelper

Method Summary
`protected EPath` | `getEPath(java.lang.String s)`
`SystemFieldListMap` | `getSystemFields(EnterpriseObject rec, java.lang.String candidateId)` returns a mapping of system field values for the candidate field
`void` | `init(SurvivorHelperConfig config)`
`ObjectNode` | `setCandidateFieldValue(ObjectNode eo, SystemField candidateField)` sets the candidate field on the omega object using the given value

Methods inherited from class com.sun.mdm.index.survivor.AbstractSurvivorHelper
`clone, executeStrategy, getCandidateFieldNames, getStrategy, getSystemFieldMeta, setCache`

Methods inherited from class java.lang.Object
`equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### mEPathCache

    protected java.util.Map mEPathCache

  pre-parse epaths and cache the ePath objects here

Constructor Detail

### DefaultSurvivorHelper

    public DefaultSurvivorHelper()

  Creates new DefaultSurvivorHelper

Method Detail

### getEPath

    protected EPath getEPath(java.lang.String s)
                      throws EPathException

  Throws:
    `EPathException`

### getSystemFields

    public SystemFieldListMap getSystemFields(EnterpriseObject rec,
                                              java.lang.String candidateId)
                                       throws SurvivorCalculationException,
                                              SystemObjectException

  returns a mapping of system field values for the candidate field

  Specified by:
    `getSystemFields` in class `AbstractSurvivorHelper`
  Parameters:
    `candidateId` - candidate field name
    `rec` - omega object
  Returns:
    Mapping of system fields using system id as Key. Key: system id Value: collection of SystemField value objects return null if error getting system fields
  Throws:
    `SurvivorCalculationException` - unexpected value
    `SystemObjectException` - error accessing entity object

### init

    public void init(SurvivorHelperConfig config)
              throws StrategyCreationException,
                     HelperCreationException

  Description copied from class: `AbstractSurvivorHelper`
  initialize the helper using a configuration object

  Overrides:
    `init` in class `AbstractSurvivorHelper`
  Parameters:
    `config` - configuration object
  Throws:
    `StrategyCreationException` - exception when creating a survivor calculation strategy
    `HelperCreationException` - error creating the helper class

### setCandidateFieldValue

    public ObjectNode setCandidateFieldValue(ObjectNode eo,
                                             SystemField candidateField)
                                      throws SurvivorCalculationException,
                                             SystemObjectException

  sets the candidate field on the omega object using the given value

  Specified by:
    `setCandidateFieldValue` in class `AbstractSurvivorHelper`
  Parameters:
    `eo` - entity object
    `candidateField` - field name and value
  Returns:
    the Omega object with updated values return null if error setting candidate field value
  Throws:
    `SurvivorCalculationException` - unexpected values
    `SystemObjectException` - error accessing entity object

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