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| package org.apache.hivemind.lib.chain; |
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| import java.util.ArrayList; |
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| import java.util.Iterator; |
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| import java.util.List; |
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| import org.apache.hivemind.ServiceImplementationFactory; |
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| import org.apache.hivemind.ServiceImplementationFactoryParameters; |
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| import org.apache.hivemind.order.Orderer; |
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| public class ChainFactory implements ServiceImplementationFactory |
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| { |
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| private ChainBuilder _chainBuilder; |
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| public Object createCoreServiceImplementation(
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| ServiceImplementationFactoryParameters factoryParameters) |
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| { |
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| List contributions = (List) factoryParameters.getFirstParameter();
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| Orderer orderer = new Orderer(factoryParameters.getErrorLog(), "command");
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| Iterator i = contributions.iterator();
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| while (i.hasNext())
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| { |
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| ChainContribution cc = (ChainContribution) i.next();
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| orderer.add(cc, cc.getId(), cc.getAfter(), cc.getBefore());
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| } |
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| List ordered = orderer.getOrderedObjects();
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| List commands = new ArrayList(ordered.size());
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| i = ordered.iterator();
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| while (i.hasNext())
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| { |
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| ChainContribution cc = (ChainContribution) i.next();
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| commands.add(cc.getCommand());
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| } |
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| String toString = "<ChainImplementation for " + factoryParameters.getServiceId() + "("
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| + factoryParameters.getServiceInterface().getName() + ")>"; |
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| return _chainBuilder.buildImplementation(
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| factoryParameters.getServiceInterface(), |
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| commands, |
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| toString); |
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| } |
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| public void setChainBuilder(ChainBuilder chainBuilder)
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| { |
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| _chainBuilder = chainBuilder;
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| } |
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| } |