com.jparams.object.builder.provider.MapProvider Maven / Gradle / Ivy

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package com.jparams.object.builder.provider;

import java.util.Collections;
import java.util.Map;

import com.jparams.object.builder.Context;
import com.jparams.object.builder.type.Type;

public class MapProvider implements Provider
{
    @Override
    public boolean supports(final Type type)
    {
        return type.getJavaType().isAssignableFrom(Map.class);
    }

    @Override
    public Map provide(final Context context)
    {
        if (context.getPath().getType().getGenerics().size() < 2)
        {
            context.logWarning("No generics found. Could not populate Map");
            return Collections.emptyMap();
        }

        final Type keyType = context.getPath().getType().getGenerics().get(0).getType();
        final Type valueType = context.getPath().getType().getGenerics().get(1).getType();
        final Object key = context.createChild("[0.key]", keyType);
        final Object value = context.createChild("[0.value]", valueType);
        return Collections.singletonMap(key, value);
    }
}