i2b2-merge-to…

OntTerm.scala
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			package net.shrine.ont

			/**
			* @author clint
			* @date Jun 10, 2014
			*/
			final case class OntTerm(parts: Seq[String]) {
			import OntTerm._

			override def toString: String = parts.mkString(twoSlashes, forwardSlash.toString, forwardSlash.toString)

			def size: Int = parts.size

			def startsWith(other: OntTerm): Boolean = {
			parts.take(other.size) == other.parts
			}

			def endsWith(other: OntTerm): Boolean = {
			parts.takeRight(other.size) == other.parts
			}

			def parent: Option[OntTerm] = size match {
			case 0 \| 1 => None
			case _ => Some(OntTerm(parts.dropRight(1)))
			}

			lazy val ancestors: Seq[OntTerm] = {
			//Return a vector to allow fast access to the last ancestor,
			//which helps isRelativeOf
			val parentSeq = parent.toVector

			parentSeq ++ (for {
			p <- parentSeq
			gp <- p.ancestors
			} yield gp)
			}

			private lazy val ancestorSet = ancestors.toSet

			def isAncestorOf(possibleChild: OntTerm): Boolean = {
			possibleChild.ancestorSet.contains(this)
			}

			def isDescendantOf(possibleParent: OntTerm): Boolean = {
			this.ancestorSet.contains(possibleParent)
			}

			def isRelativeOf(possibleRelative: OntTerm): Boolean = {
			def oldestAncestor(t: OntTerm) = t.ancestors.lastOption.getOrElse(t)

			oldestAncestor(possibleRelative) == oldestAncestor(this)
			}

			lazy val hLevel: Int = ancestors.size
			}

			object OntTerm {

			def apply(s: String): OntTerm = new OntTerm(s.split(s"$twoSlashes+").filter(!_.isEmpty))

			val forwardSlash = '\\'

			val twoSlashes = s"$forwardSlash$forwardSlash"

			val shrinePrefix = """\\SHRINE\SHRINE\"""
			}