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java.lang.Objectorg.apache.mahout.cf.taste.impl.model.AbstractIDMigrator
public abstract class AbstractIDMigrator
Constructor Summary | |
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protected |
AbstractIDMigrator()
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Method Summary | |
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protected long |
hash(java.lang.String value)
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void |
refresh(java.util.Collection<Refreshable> alreadyRefreshed)
Triggers "refresh" -- whatever that means -- of the implementation. |
long |
toLongID(java.lang.String stringID)
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.apache.mahout.cf.taste.model.IDMigrator |
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toStringID |
Constructor Detail |
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protected AbstractIDMigrator()
Method Detail |
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protected final long hash(java.lang.String value)
public long toLongID(java.lang.String stringID)
toLongID
in interface IDMigrator
String
's UTF-8 encoding as a
long.public void refresh(java.util.Collection<Refreshable> alreadyRefreshed)
Refreshable
Triggers "refresh" -- whatever that means -- of the implementation. The general contract is that any should always leave itself in a consistent, operational state, and that the refresh atomically updates internal state from old to new.
refresh
in interface Refreshable
alreadyRefreshed
- s that are known to have already been
refreshed as a result of an initial call to a method on some
object. This ensure that objects in a refresh dependency graph aren't refreshed twice
needlessly.
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