com.bluetrainsoftware.common.config.MapCoercion Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of stickycode-extended-config Show documentation

Extends the functionality of Spring Boot and Sticky Code and provides extra support for Kubernetes style mounted volumes.

There is a newer version: 2.2

Show newest version

package com.bluetrainsoftware.common.config;

import net.stickycode.coercion.*;

import javax.inject.Inject;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

/**
 * The Sticky one doesn't trim the names
 * 
 * author: Richard Vowles - http://gplus.to/RichardVowles
 */
public class MapCoercion extends AbstractNoDefaultCoercion> {

	@Inject
	CoercionFinder finder;

	@Override
	public Map coerce(CoercionTarget type, String value) {
		if (value.length() == 0)
			return Collections.emptyMap();


		CoercionTarget[] typeArguments = type.getComponentCoercionTypes();
		assert typeArguments.length == 2 : "Maps should have two type arguments";

		Coercion keyCoercion = findComponentCoercion(typeArguments[0]);
		Coercion valueCoercion = findComponentCoercion(typeArguments[1]);
		Map map = new HashMap();
		for (String string : new StringSpliterable(value)) {
			String[] s = string.split("=");
			map.put(
				keyCoercion.coerce(typeArguments[0], s[0].trim()),
				valueCoercion.coerce(typeArguments[1], s[1].trim()));
		}
		return Collections.unmodifiableMap(map);
	}

	private Coercion findComponentCoercion(CoercionTarget target) {
		return finder.find(target);
	}

	@Override
	public boolean isApplicableTo(CoercionTarget target) {
		if (!Map.class.isAssignableFrom(target.getType()))
			return false;

		return true;
	}

}