# CompositeKeyLinkageSupport.java

    package org.codefilarete.stalactite.engine.configurer.entity;

    import java.util.List;
    import java.util.function.Consumer;
    import java.util.function.Function;

    import org.codefilarete.reflection.ReadWritePropertyAccessPoint;
    import org.codefilarete.stalactite.dsl.entity.EntityMappingConfiguration.CompositeKeyMapping;
    import org.codefilarete.stalactite.dsl.entity.FluentEntityMappingBuilder;
    import org.codefilarete.stalactite.dsl.key.CompositeKeyMappingConfigurationProvider;

    import static org.codefilarete.stalactite.dsl.key.CompositeKeyMappingConfiguration.CompositeKeyLinkage;

    /**
     * Storage for composite key mapping definition. See {@link FluentEntityMappingBuilder#mapKey(org.codefilarete.reflection.SerializablePropertyAccessor, CompositeKeyMappingConfigurationProvider, Consumer, Function)} methods.
     */
    public class CompositeKeyLinkageSupport<C, I> implements CompositeKeyMapping<C, I> {

    	private final ReadWritePropertyAccessPoint<C, I> accessor;
    	private final CompositeKeyMappingConfigurationProvider<I> compositeKeyMappingBuilder;
    	private final Consumer<C> markAsPersistedFunction;
    	private final Function<C, Boolean> isPersistedFunction;

    	private boolean setByConstructor;

    	public CompositeKeyLinkageSupport(ReadWritePropertyAccessPoint<C, I> accessor,
    									  CompositeKeyMappingConfigurationProvider<I> compositeKeyMappingBuilder,
    									  Consumer<C> markAsPersistedFunction,
    									  Function<C, Boolean> isPersistedFunction) {
    		this.accessor = accessor;
    		this.compositeKeyMappingBuilder = compositeKeyMappingBuilder;
    		this.markAsPersistedFunction = markAsPersistedFunction;
    		this.isPersistedFunction = isPersistedFunction;
    	}

    	public CompositeKeyMappingConfigurationProvider<I> getCompositeKeyMappingBuilder() {
    		return compositeKeyMappingBuilder;
    	}

    	@Override
    	public ReadWritePropertyAccessPoint<C, I> getAccessor() {
    		return accessor;
    	}

    	public void setByConstructor() {
    		this.setByConstructor = true;
    	}

    	@Override
    	public boolean isSetByConstructor() {
    		return setByConstructor;
    	}

    	public List<CompositeKeyLinkage<I, ?>> getPropertiesMapping() {
    		return compositeKeyMappingBuilder.getConfiguration().getPropertiesMapping();
    	}

    	@Override
    	public Consumer<C> getMarkAsPersistedFunction() {
    		return markAsPersistedFunction;
    	}

    	@Override
    	public Function<C, Boolean> getIsPersistedFunction() {
    		return isPersistedFunction;
    	}

    }