org.hisp.dhis.rules.models.RuleVariableNewestEvent Maven / Gradle / Ivy

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package org.hisp.dhis.rules.models;

import com.google.auto.value.AutoValue;
import com.google.common.collect.Maps;
import org.hisp.dhis.rules.RuleVariableValue;
import org.hisp.dhis.rules.RuleVariableValueMapBuilder;
import org.hisp.dhis.rules.Utils;

import javax.annotation.Nonnull;
import java.util.List;
import java.util.Map;

import static org.hisp.dhis.rules.Utils.getLastUpdateDate;

@AutoValue
public abstract class RuleVariableNewestEvent
    extends RuleVariableDataElement
{

    @Nonnull
    public static RuleVariableNewestEvent create( @Nonnull String name,
        @Nonnull String dataElement, @Nonnull RuleValueType dataElementValueType )
    {
        return new AutoValue_RuleVariableNewestEvent( name, dataElement, dataElementValueType );
    }

    @Override
    public Map createValues( RuleVariableValueMapBuilder builder,
        Map> allEventValues,
        Map currentEnrollmentValues,
        Map currentEventValues )
    {
        Map valueMap = Maps.newHashMap();
        List ruleDataValues = allEventValues.get( this.dataElement() );

        if ( ruleDataValues == null || ruleDataValues.isEmpty() )
        {
            valueMap.put( this.name(), RuleVariableValue.create( this.dataElementType() ) );
        }
        else
        {
            valueMap.put( this.name(), RuleVariableValue.create( ruleDataValues.get( 0 ).value(),
                this.dataElementType(), Utils.values( ruleDataValues ), getLastUpdateDate( ruleDataValues ) ) );
        }
        return valueMap;
    }
}