net.java.ao.test.converters.DynamicFieldNameConverter Maven / Gradle / Ivy

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This is a library for Active Objects users to depend on for their own testing.

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package net.java.ao.test.converters;

import com.google.common.base.Supplier;
import com.google.common.base.Suppliers;
import com.google.common.collect.ImmutableMap;
import net.java.ao.atlassian.AtlassianFieldNameConverter;
import net.java.ao.schema.CamelCaseFieldNameConverter;
import net.java.ao.schema.FieldNameConverter;
import net.java.ao.schema.FieldNameProcessor;
import net.java.ao.test.ConfigurationProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.lang.reflect.Method;

public class DynamicFieldNameConverter implements FieldNameConverter, FieldNameProcessor {
    private static final Logger logger = LoggerFactory.getLogger(DynamicFieldNameConverter.class);

    private final Supplier fncSupplier;

    public DynamicFieldNameConverter() {
        this.fncSupplier = Suppliers.memoize(new SystemPropertyFieldNameConverterSupplier());
    }

    @Override
    public String getName(Method method) {
        return fncSupplier.get().getName(method);
    }

    @Override
    public String getPolyTypeName(Method method) {
        return fncSupplier.get().getPolyTypeName(method);
    }

    @Override
    public String convertName(String name) {
        if (fncSupplier.get() instanceof FieldNameProcessor) {
            return ((FieldNameProcessor) fncSupplier.get()).convertName(name);
        } else {
            return name;
        }
    }

    private static final class SystemPropertyFieldNameConverterSupplier implements Supplier {
        private static final String DEFAULT = "atlassian";

        private final ImmutableMap converters = ImmutableMap.of(
                DEFAULT, new AtlassianFieldNameConverter(),
                "camelcase", new CamelCaseFieldNameConverter(),
                "uppercase", new UpperCaseFieldNameConverter()
        );

        @Override
        public FieldNameConverter get() {
            final String key = ConfigurationProperties.get("ao.test.fieldnameconverter", DEFAULT);
            final FieldNameConverter fnc = converters.get(key);

            logger.debug("Field name converter key is {} and resolved to {}", key, fnc.getClass().getName());
            return fnc;
        }
    }
}