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 * or the following license:
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 * provided that the following conditions are met:
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 * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
 * and the following disclaimer.
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package org.openjdk.jmc.agent;

import javax.management.openmbean.CompositeData;

import org.openjdk.jmc.agent.impl.AbstractConvertable;
import org.openjdk.jmc.agent.util.TypeUtils;
import org.openjdk.jmc.agent.util.expression.ExpressionResolver;
import org.openjdk.jmc.agent.util.expression.IllegalSyntaxException;
import org.openjdk.jmc.agent.util.expression.ReferenceChain;

public class Field extends AbstractConvertable implements Attribute {

	private final String name;
	private final String expression;
	private final String fieldName;
	private final String description;
	private final String contentType;
	private final String relationKey;

	private Class<?> resolvingCaller;
	private ReferenceChain referenceChain;

	public Field(String name, String expression, String description, String contentType, String relationKey,
			String converterClassName) {
		super(converterClassName);
		this.name = name;
		this.expression = expression;
		this.description = description;
		this.contentType = contentType;
		this.relationKey = relationKey;
		this.fieldName = TypeUtils.deriveIdentifierPart(name);
	}

	public static Field from(CompositeData cd) {
		return new Field((String) cd.get("name"), (String) cd.get("expression"), (String) cd.get("description"),
				(String) cd.get("contentType"), (String) cd.get("relationKey"), (String) cd.get("converterDefinition"));
	}

	@Override
	public String getName() {
		return this.name;
	}

	public String getExpression() {
		return expression;
	}

	@Override
	public String getFieldName() {
		return this.fieldName;
	}

	@Override
	public String getDescription() {
		return this.description;
	}

	@Override
	public String getContentType() {
		return this.contentType;
	}

	@Override
	public String getRelationKey() {
		return this.relationKey;
	}

	public ReferenceChain resolveReferenceChain(Class<?> callerClass) throws IllegalSyntaxException {
		if (!callerClass.equals(resolvingCaller)) {
			resolvingCaller = callerClass;
			referenceChain = ExpressionResolver.solve(callerClass, expression);
		}

		return referenceChain;
	}
}
