package org.json; import java.util.Arrays; import java.util.List; import java.util.regex.Pattern; /** * Simple JSON expression. The expression is just a sequence of * names separated by periods to be evaluated. Maybe extend it later * to be a little more. * * @author stella * */ public class JSONExpression { private static final Pattern SEP_PATTERN=Pattern.compile("\\."); private List components; public JSONExpression(String expression) { this(parse(expression)); } public JSONExpression(List components) { this.components=components; } public static List parse(String expression) { return Arrays.asList(SEP_PATTERN.split(expression)); } public int length() { return components.size(); } public String at(int i) { return components.get(i); } }