<?xml version="1.0" encoding="UTF-8"?>
<ecore:EPackage xmi:version="2.0"
    xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" name="library"
    nsURI="http:///library.ecore" nsPrefix="library">
  <eClassifiers xsi:type="ecore:EClass" name="Book">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="title" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="pages" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EInt"
        defaultValueLiteral="100"/>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="category" eType="#//BookCategory"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="author" lowerBound="1"
        eType="#//Writer" eOpposite="#//Writer/books"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Library">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="writers" upperBound="-1"
        eType="#//Writer" containment="true"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="books" upperBound="-1"
        eType="#//Book" containment="true"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Writer">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="books" upperBound="-1"
        eType="#//Book" eOpposite="#//Book/author"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EEnum" name="BookCategory">
    <eLiterals name="Mystery"/>
    <eLiterals name="ScienceFiction" value="1"/>
    <eLiterals name="Biography" value="2"/>
  </eClassifiers>
</ecore:EPackage>