All Downloads are FREE. Search and download functionalities are using the official Maven repository.

weka.core.packageManagement.DefaultPackage Maven / Gradle / Ivy

Go to download

The Waikato Environment for Knowledge Analysis (WEKA), a machine learning workbench. This version represents the developer version, the "bleeding edge" of development, you could say. New functionality gets added to this version.

There is a newer version: 3.9.6
Show newest version
/*
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see .
 */

/*
 *    DefaultPackage.java
 *    Copyright (C) 2015 University of Waikato, Hamilton, New Zealand
 *
 */
package weka.core.packageManagement;

import java.io.File;
import java.io.Serializable;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;

/**
 * A concrete implementation of Package that uses Java properties files/classes
 * to manage package meta data. Assumes that meta data for individual packages
 * is stored on the central repository (or possibly in a local cache - both
 * accessible via http) in properties files that live in a sub-directory with
 * the same name as the package. Furthermore, each property file is assumed to
 * be named as the version number of the package in question with a ".props"
 * extension. A "Latest.props" file should exist for each package and should
 * always hold meta data on the latest version of a package.
 * 
 * @author mhall (mhall{[at]}pentaho{[dot]}com).
 * @version $Revision: 52462 $
 * 
 */
public class DefaultPackage extends Package implements Serializable {

  /**
   * For serialization
   */
  private static final long serialVersionUID = 3643121886457892125L;

  /** Holds the home directory for installed packages */
  protected File m_packageHome;

  /** The package manager in use */
  protected transient PackageManager m_packageManager;

  /**
   * Clone this package. Only makes a shallow copy of the meta data map
   * 
   * @return a copy of this package
   */
  @Override
  public Object clone() {

    DefaultPackage newP = null;

    if (m_packageHome != null) {
      newP =
        new DefaultPackage(new File(m_packageHome.toString()), m_packageManager);
    } else {
      newP = new DefaultPackage(null, m_packageManager);
    }

    HashMap metaData = new HashMap();
    Set keys = m_packageMetaData.keySet();
    Iterator i = keys.iterator();

    while (i.hasNext()) {
      Object key = i.next();
      Object value = m_packageMetaData.get(key);
      metaData.put(key, value);
    }

    newP.setPackageMetaData(metaData);

    return newP;
  }

  /**
   * Set the package manager for this package
   * 
   * @param p the package manager to use
   */
  public void setPackageManager(PackageManager p) {
    m_packageManager = p;
  }

  /**
   * Constructs an new DefaultPackage.
   * 
   * @param packageHome the directory that packages are installed into.
   * @param manager the package manager in use.
   * @param packageMetaData A Map of package meta data for this package.
   */
  public DefaultPackage(File packageHome, PackageManager manager,
    Map packageMetaData) {
    this(packageHome, manager);

    setPackageMetaData(packageMetaData);
  }

  /**
   * Constructs a new DefaultPackage.
   * 
   * @param packageHome the directory that packages are installed into.
   * @param manager the package manager in use.
   */
  public DefaultPackage(File packageHome, PackageManager manager) {
    m_packageHome = packageHome;
    m_packageManager = manager;
  }

  /**
   * Convenience method that returns the URL to the package (i.e the provider's
   * URL). This information is assumed to be stored in the package meta data.
   * 
   * @return the URL to the package or null if the URL is not available for some
   *         reason
   * @throws Exception if the URL can't be retrieved for some reason
   */
  @Override
  public URL getPackageURL() throws Exception {
    String url = getPackageMetaDataElement("PackageURL").toString().trim();

    URL packageURL = new URL(url);

    return packageURL;
  }

  /**
   * Convenience method to return the name of this package.
   * 
   * @return the name of this package.
   */
  @Override
  public String getName() {
    return getPackageMetaDataElement("PackageName").toString();
  }

  protected static String[] splitNameVersion(String nameAndVersion) {
    String[] result = new String[3];

    nameAndVersion = nameAndVersion.trim();
    if (nameAndVersion.indexOf('(') < 0) {
      result[0] = nameAndVersion;
    } else if (nameAndVersion.indexOf(')') >= 0) {
      boolean ok = true;
      result[0] = nameAndVersion.substring(0, nameAndVersion.indexOf('('));
      result[0] = result[0].trim();

      String secondInequality = null;
      int delimiterIndex = nameAndVersion.indexOf('|');
      if (delimiterIndex >= 0) {
        secondInequality =
          nameAndVersion.substring(delimiterIndex + 1, nameAndVersion.length());
        secondInequality = secondInequality.trim();
        String[] result2 = new String[5];
        result2[0] = result[0];
        result = result2;
      } else {
        delimiterIndex = nameAndVersion.length();
      }

      nameAndVersion =
        nameAndVersion.substring(nameAndVersion.indexOf('(') + 1,
          delimiterIndex);
      nameAndVersion = nameAndVersion.trim();
      int pos = 1;
      if (nameAndVersion.charAt(0) == '=') {
        result[1] = "=";
      } else if (nameAndVersion.charAt(1) == '=') {
        pos++;
        if (nameAndVersion.charAt(0) == '<') {
          result[1] = "<=";
        } else {
          result[1] = ">=";
        }
      } else if (nameAndVersion.charAt(0) == '<') {
        result[1] = "<";
      } else if (nameAndVersion.charAt(0) == '>') {
        result[1] = ">";
      } else {
        ok = false;
      }

      if (ok) {
        if (secondInequality != null) {
          delimiterIndex = nameAndVersion.length();
        } else {
          delimiterIndex = nameAndVersion.indexOf(')');
        }
        nameAndVersion = nameAndVersion.substring(pos, delimiterIndex);
        result[2] = nameAndVersion.trim();
      }

      // do the second inequality (if present)
      if (secondInequality != null) {
        ok = true;
        pos = 1;
        if (secondInequality.charAt(0) == '=') {
          result[3] = "=";
        } else if (secondInequality.charAt(1) == '=') {
          pos++;
          if (secondInequality.charAt(0) == '<') {
            result[3] = "<=";
          } else {
            result[3] = ">=";
          }
        } else if (secondInequality.charAt(0) == '<') {
          result[3] = "<";
        } else if (secondInequality.charAt(0) == '>') {
          result[3] = ">";
        } else {
          ok = false;
        }

        if (ok) {
          secondInequality =
            secondInequality.substring(pos, secondInequality.indexOf(')'));
          result[4] = secondInequality.trim();
        }
      }
    }

    return result;
  }

  /**
   * Get the list of packages that this package depends on.
   * 
   * @return the list of packages that this package depends on.
   * @throws Exception if a problem occurs while getting the list of
   *           dependencies.
   */
  @Override
  public List getDependencies() throws Exception {
    List dependencies = new ArrayList();
    String dependenciesS = getPackageMetaDataElement("Depends").toString();

    if (dependenciesS != null) {
      StringTokenizer tok = new StringTokenizer(dependenciesS, ",");
      while (tok.hasMoreTokens()) {
        String nextT = tok.nextToken().trim();
        String[] split = splitNameVersion(nextT);
        Package toAdd = null;

        // don't include the base system!
        if (!(split[0].equalsIgnoreCase(m_packageManager.getBaseSystemName()))) {

          // gets the latest version of this package if split[2] is null
          toAdd = m_packageManager.getRepositoryPackageInfo(split[0], split[2]);

          if (split.length == 3) {
            VersionPackageConstraint versionConstraint =
              new VersionPackageConstraint(toAdd);
            if (split[2] == null) {
              // assume anything up to and including the current version is
              // acceptable
              versionConstraint
                .setVersionConstraint(VersionPackageConstraint.VersionComparison.LESSTHANOREQUAL);
            } else {
              versionConstraint.setVersionConstraint(split[1]);
            }

            Dependency dep = new Dependency(this, versionConstraint);
            dependencies.add(dep);
          } else {
            // ranged constraint
            VersionRangePackageConstraint versionConstraint =
              new VersionRangePackageConstraint(toAdd);
            VersionPackageConstraint.VersionComparison comp1 =
              VersionPackageConstraint.getVersionComparison(split[1]);
            VersionPackageConstraint.VersionComparison comp2 =
              VersionPackageConstraint.getVersionComparison(split[3]);
            versionConstraint.setRangeConstraint(split[2], comp1, split[4],
              comp2);

            Dependency dep = new Dependency(this, versionConstraint);
            dependencies.add(dep);
          }
        }
      }
    }

    return dependencies;
  }

  /**
   * Gets the dependency on the base system that this package requires.
   * 
   * @return the base system dependency(s) for this package
   * @throws Exception if the base system dependency can't be determined for
   *           some reason.
   */
  @Override
  public List getBaseSystemDependency() throws Exception {
    String dependenciesS = getPackageMetaDataElement("Depends").toString();
    Dependency baseDep = null;
    List baseDeps = new ArrayList();

    if (dependenciesS != null) {
      StringTokenizer tok = new StringTokenizer(dependenciesS, ",");
      while (tok.hasMoreTokens()) {
        String nextT = tok.nextToken().trim();
        String[] split = splitNameVersion(nextT);

        if ((split[0].equalsIgnoreCase(m_packageManager.getBaseSystemName()))) {

          // construct a "dummy" package for the base system
          Map baseMap = new HashMap();
          baseMap.put("PackageName", "weka");

          // use a suitably ridiculous max version number if one hasn't been
          // supplied
          // for some reason
          split[2] = (split[2] == null ? "1000.1000.1000" : split[2]);
          baseMap.put("Version", split[2]);
          Package basePackage =
            new DefaultPackage(null, m_packageManager, baseMap);

          if (split.length == 3) {
            VersionPackageConstraint baseConstraint =
              new VersionPackageConstraint(basePackage);
            VersionPackageConstraint.VersionComparison baseComp =
              VersionPackageConstraint.VersionComparison.LESSTHANOREQUAL;
            if (split[1] != null) {
              baseComp =
                VersionPackageConstraint.getVersionComparison(split[1]);
            }
            baseConstraint.setVersionConstraint(baseComp);

            baseDep = new Dependency(this, baseConstraint);
            baseDeps.add(baseDep);
          } else {
            // ranged constraint
            VersionRangePackageConstraint baseConstraint =
              new VersionRangePackageConstraint(basePackage);

            VersionPackageConstraint.VersionComparison comp1 =
              VersionPackageConstraint.getVersionComparison(split[1]);
            VersionPackageConstraint.VersionComparison comp2 =
              VersionPackageConstraint.getVersionComparison(split[3]);
            baseConstraint.setRangeConstraint(split[2], comp1, split[4], comp2);

            baseDep = new Dependency(this, baseConstraint);
            baseDeps.add(baseDep);
          }
        }
      }
    }

    if (baseDeps.size() == 0) {
      throw new Exception("[Package] "
        + getPackageMetaDataElement("PackageName").toString()
        + " can't determine what version of the base system is required!!");
    }

    return baseDeps;
  }

  private boolean findPackage(String packageName, List packageList) {
    boolean found = false;

    Iterator i = packageList.iterator();

    while (i.hasNext()) {
      Package p = i.next();
      String pName = p.getPackageMetaDataElement("PackageName").toString();
      if (packageName.equals(pName)) {
        found = true;
        break;
      }
    }

    return found;
  }

  /**
   * Gets a list of packages that this package depends on that are not in the
   * supplied list of packages.
   * 
   * @param packages a list of packages to compare this package's dependencies
   *          against.
   * @return those packages that this package depends on that aren't in the
   *         supplied list.
   * @throws Exception if the list of missing depenencies can't be determined
   *           for some reason.
   */
  @Override
  public List getMissingDependencies(List packages)
    throws Exception {
    List missing = new ArrayList();
    String dependencies = getPackageMetaDataElement("Depends").toString();

    if (dependencies != null) {
      StringTokenizer tok = new StringTokenizer(dependencies, ",");
      while (tok.hasMoreTokens()) {
        String nextT = tok.nextToken().trim();
        String[] split = splitNameVersion(nextT);

        // don't consider the base system!
        if (!(split[0].equalsIgnoreCase(m_packageManager.getBaseSystemName()))) {

          // gets the latest version of this package if split[2] is null
          Package tempDep =
            m_packageManager.getRepositoryPackageInfo(split[0], split[2]);
          if (!findPackage(split[0], packages)) {
            VersionPackageConstraint versionConstraint =
              new VersionPackageConstraint(tempDep);
            if (split[2] == null) {
              // assume anything up to and including the current version is
              // acceptable
              versionConstraint
                .setVersionConstraint(VersionPackageConstraint.VersionComparison.LESSTHANOREQUAL);
              missing.add(new Dependency(this, versionConstraint));
            } else {
              if (split.length == 3) {
                versionConstraint.setVersionConstraint(split[1]);
                missing.add(new Dependency(this, versionConstraint));
              } else {
                VersionRangePackageConstraint versionRConstraint =
                  new VersionRangePackageConstraint(tempDep);
                VersionPackageConstraint.VersionComparison comp1 =
                  VersionPackageConstraint.getVersionComparison(split[1]);
                VersionPackageConstraint.VersionComparison comp2 =
                  VersionPackageConstraint.getVersionComparison(split[3]);

                versionRConstraint.setRangeConstraint(split[2], comp1,
                  split[4], comp2);
                missing.add(new Dependency(this, versionRConstraint));
              }
            }
          }
        }
      }
    }

    return missing;
  }

  /**
   * Gets a list of packages that this package depends on that are not currently
   * installed.
   * 
   * @return a list of missing packages that this package depends on.
   */
  @Override
  public List getMissingDependencies() throws Exception {
    List installedPackages = m_packageManager.getInstalledPackages();
    String dependencies = getPackageMetaDataElement("Depends").toString();

    return getMissingDependencies(installedPackages);

    /*
     * if (dependencies != null) { StringTokenizer tok = new
     * StringTokenizer(dependencies, ","); while (tok.hasMoreTokens()) { String
     * nextT = tok.nextToken().trim(); String[] split = splitNameVersion(nextT);
     * 
     * // don't consider the base system! if
     * (!(split[0].equalsIgnoreCase(m_packageManager.getBaseSystemName()))) {
     * 
     * // gets the latest version of this package if split[2] is null Package
     * tempDep = m_packageManager.getRepositoryPackageInfo(split[0], split[2]);
     * if (!tempDep.isInstalled()) { VersionPackageConstraint versionConstraint
     * = new VersionPackageConstraint(tempDep); if (split[2] == null) { //
     * assume anything up to and including the current version is acceptable
     * versionConstraint.
     * setVersionConstraint(VersionPackageConstraint.VersionComparison
     * .LESSTHANOREQUAL); } else {
     * versionConstraint.setVersionConstraint(split[1]); }
     * 
     * missing.add(new Dependency(this, versionConstraint)); } } } }
     * 
     * return missing;
     */
  }

  /**
   * Compares this package's precluded list (if any) against the list of
   * supplied packages. Any packages in the supplied list that match (by name
   * and version constraints) any in the precluded list are returned
   *
   * @param packages a list of packages to compare against those in this
   *          package's precluded list
   * @return a list of packages that are covered by those in the precluded list
   * @throws Exception if a problem occurs
   */
  @Override
  public List getPrecludedPackages(List packages)
    throws Exception {
    List result = new ArrayList<>();
    Object precluded = getPackageMetaDataElement("Precludes");
    if (precluded != null) {
      StringTokenizer tok = new StringTokenizer(precluded.toString(), ",");
      while (tok.hasMoreTokens()) {
        String nextT = tok.nextToken().trim();
        String[] splitD = splitNameVersion(nextT);
        // look for a match
        for (Package p : packages) {
          if (p.getName().equalsIgnoreCase(splitD[0].trim())) {
            // if a version number is supplied then check, otherwise assume
            // that version does not matter
            if (splitD[1] != null && splitD[2] != null) {
              String versionI =
                p.getPackageMetaDataElement("Version").toString().trim();

              if (splitD.length == 3) {
                VersionPackageConstraint.VersionComparison constraint =
                  VersionPackageConstraint.getVersionComparison(splitD[1]);
                if (VersionPackageConstraint.checkConstraint(versionI,
                  constraint, splitD[2])) {
                  result.add(p);
                }
              } else {
                VersionRangePackageConstraint versionRConstraint =
                  new VersionRangePackageConstraint(p);
                VersionPackageConstraint.VersionComparison comp1 =
                  VersionPackageConstraint.getVersionComparison(splitD[1]);
                VersionPackageConstraint.VersionComparison comp2 =
                  VersionPackageConstraint.getVersionComparison(splitD[3]);
                versionRConstraint.setRangeConstraint(splitD[2], comp1,
                  splitD[4], comp2);
                if (versionRConstraint.checkConstraint(p)) {
                  result.add(p);
                }
              }
            } else {
              result.add(p);
            }
          }
        }

      }
    }

    return result;
  }

  /**
   * Gets those packages from the supplied list that this package depends on and
   * are currently incompatible with this package.
   * 
   * @param packages a list of packages to compare this package's dependencies
   *          against
   * @return those packages from the supplied list that are incompatible with
   *         respect to this package's dependencies
   * @throws Exception if the list of incompatible dependencies can't be
   *           generated for some reason.
   */
  @Override
  public List getIncompatibleDependencies(List packages)
    throws Exception {
    List incompatible = new ArrayList();
    String dependencies = getPackageMetaDataElement("Depends").toString();

    if (dependencies != null) {
      StringTokenizer tok = new StringTokenizer(dependencies, ",");
      while (tok.hasMoreTokens()) {
        String nextT = tok.nextToken().trim();
        String[] splitD = splitNameVersion(nextT);

        // check only if a version number was supplied in the dependency list.
        if (splitD[1] != null && splitD[2] != null) {
          for (Package p : packages) {
            String packageNameI =
              p.getPackageMetaDataElement("PackageName").toString();
            if (packageNameI.trim().equalsIgnoreCase(splitD[0].trim())) {
              // now check version against this one
              String versionI =
                p.getPackageMetaDataElement("Version").toString().trim();
              // String[] splitI = splitNameVersion(versionI);

              if (splitD.length == 3) {
                VersionPackageConstraint.VersionComparison constraint =
                  VersionPackageConstraint.getVersionComparison(splitD[1]);
                if (!VersionPackageConstraint.checkConstraint(versionI,
                  constraint, splitD[2])) {
                  VersionPackageConstraint vpc =
                    new VersionPackageConstraint(p);
                  vpc.setVersionConstraint(constraint);
                  incompatible.add(new Dependency(this, vpc));
                }
              } else {
                VersionRangePackageConstraint versionRConstraint =
                  new VersionRangePackageConstraint(p);
                VersionPackageConstraint.VersionComparison comp1 =
                  VersionPackageConstraint.getVersionComparison(splitD[1]);
                VersionPackageConstraint.VersionComparison comp2 =
                  VersionPackageConstraint.getVersionComparison(splitD[3]);

                versionRConstraint.setRangeConstraint(splitD[2], comp1,
                  splitD[4], comp2);
                incompatible.add(new Dependency(this, versionRConstraint));
              }

              /*
               * int comparisonResult =
               * VersionPackageConstraint.compare(versionI, splitD[2]); if
               * (!versionOK(splitD[1], comparisonResult)) {
               * incompatible.add(p); }
               */
            }
          }
        }
      }
    }

    return incompatible;
  }

  /**
   * Gets a list of installed packages that this package depends on that are
   * currently incompatible with this package.
   * 
   * @return a list of incompatible installed packages that this package depends
   *         on.
   */
  @Override
  public List getIncompatibleDependencies() throws Exception {
    List installedP = m_packageManager.getInstalledPackages();
    String dependencies = getPackageMetaDataElement("Depends").toString();

    return getIncompatibleDependencies(installedP);

    /*
     * if (dependencies != null) { StringTokenizer tok = new
     * StringTokenizer(dependencies, ","); while (tok.hasMoreTokens()) { String
     * nextT = tok.nextToken().trim(); String[] splitD =
     * splitNameVersion(nextT);
     * 
     * // check only if a version number was supplied in the dependency list. if
     * (splitD[1] != null && splitD[2] != null) { for (Package p : installedP) {
     * String packageNameI =
     * p.getPackageMetaDataElement("PackageName").toString(); if
     * (packageNameI.trim().equalsIgnoreCase(splitD[0].trim())) { // now check
     * version against installed String versionI =
     * p.getPackageMetaDataElement("Version").toString().trim(); // String[]
     * splitI = splitNameVersion(versionI);
     * 
     * VersionPackageConstraint.VersionComparison constraint =
     * VersionPackageConstraint.getVersionComparison(splitD[1]); if
     * (!VersionPackageConstraint.checkConstraint(versionI, constraint,
     * splitD[2])) { VersionPackageConstraint vpc = new
     * VersionPackageConstraint(p); vpc.setVersionConstraint(constraint);
     * incompatible.add(new Dependency(this, vpc)); } } } } } }
     * 
     * return incompatible;
     */
  }

  /*
   * public Object getPackageDependencyVersion(String dependsOnName) { String
   * dependencies = getPackageMetaDataElement("Depends").toString(); Object
   * result = null;
   * 
   * if (dependencies != null) { StringTokenizer tok = new
   * StringTokenizer(dependencies, ","); while (tok.hasMoreTokens()) { String
   * nextT = tok.nextToken().trim(); String[] splitD = splitNameVersion(nextT);
   * if (dependsOnName.trim().equalsIgnoreCase(splitD[0]) && splitD[2] != null)
   * { result = splitD[2]; break; } } }
   * 
   * return result; }
   */

  /**
   * Returns true if this package is compatible with the currently installed
   * version of the base system.
   * 
   * @return true if this package is compatible with the main software system.
   * @throws Exception if a problem occurs while checking compatibility.
   */
  @Override
  public boolean isCompatibleBaseSystem() throws Exception {

    String baseSystemName = m_packageManager.getBaseSystemName();
    String systemVersion = m_packageManager.getBaseSystemVersion().toString();
    // System.err.println("Base system version " + systemVersion);

    String dependencies = getPackageMetaDataElement("Depends") == null
      ? null : getPackageMetaDataElement("Depends").toString();
    if (dependencies == null) {
      return true;
    }
    
    boolean ok = true;
    StringTokenizer tok = new StringTokenizer(dependencies, ",");
    while (tok.hasMoreTokens()) {
      String nextT = tok.nextToken().trim();
      String[] split = splitNameVersion(nextT);
      if (split[0].startsWith(baseSystemName.toLowerCase())) {
        // check the system version
        if (split[1] != null) {
          if (split.length == 3) {
            VersionPackageConstraint.VersionComparison constraint =
              VersionPackageConstraint.getVersionComparison(split[1]);
            if (!VersionPackageConstraint.checkConstraint(systemVersion,
              constraint, split[2])) {
              ok = false;
              break;
            }
          } else {
            // construct a "dummy" package for the base system
            Map baseMap = new HashMap();
            baseMap.put("PackageName", "weka");

            baseMap.put("Version", systemVersion);
            Package basePackage =
              new DefaultPackage(null, m_packageManager, baseMap);

            VersionRangePackageConstraint versionRConstraint =
              new VersionRangePackageConstraint(basePackage);
            VersionPackageConstraint.VersionComparison comp1 =
              VersionPackageConstraint.getVersionComparison(split[1]);
            VersionPackageConstraint.VersionComparison comp2 =
              VersionPackageConstraint.getVersionComparison(split[3]);

            versionRConstraint.setRangeConstraint(split[2], comp1, split[4],
              comp2);

            if (!versionRConstraint.checkConstraint(basePackage)) {
              ok = false;
              break;
            }
          }
          /*
           * int comparisonResult =
           * VersionPackageConstraint.compare(systemVersion, split[2]); ok =
           * versionOK(split[1], comparisonResult); if (!ok) { break; }
           */
        }
      }
    }

    return ok;
  }

  /**
   * Returns true if this package is good to go with the current version of the
   * software and versions of any installed packages that it depends on.
   * 
   * @return true if this package is good to go.
   * @throws Exception if a problem occurs while checking compatibility.
   */
  /*
   * public boolean isCompatible() throws Exception { // TODO rewrite this to
   * make use of getIncompatibleDependencies() // and getMissingDependencies()
   * (IF this package is installed)
   * 
   * // MIGHT just rename this method to isCompatibleWithBaseSystem
   * 
   * boolean ok = isCompatibleBaseSystem();
   * 
   * if (ok) { // check for any incompatible dependencies List
   * incompatible = getIncompatibleDependencies(); if (incompatible.size() > 0)
   * { ok = false; } }
   * 
   * if (ok && isInstalled()) { // first check to see if the installed version
   * is the same as us Package installedVersion =
   * m_packageManager.getInstalledPackageInfo
   * (getPackageMetaDataElement("PackageName").toString()); String
   * installedVersionS =
   * installedVersion.getPackageMetaDataElement("Version").toString(); String
   * thisVersionS = getPackageMetaDataElement("Version").toString();
   * 
   * if (VersionPackageConstraint.compare(thisVersionS, installedVersionS) ==
   * VersionPackageConstraint.VersionComparison.EQUAL) { // if equal to the
   * installed version then check to see if any dependencies are // missing. If
   * not equal to the installed version then just assume that we // we be
   * overwriting the installed version and any missing dependencies will // be
   * downloaded during the install. List missing =
   * getMissingDependencies(); if (missing.size() > 0) { ok = false; } } }
   * 
   * return ok; }
   */

  /**
   * Install this package.
   * 
   * @throws Exception if something goes wrong during installation.
   */
  @Override
  public void install() throws Exception {
    URL packageURL = getPackageURL();

    m_packageManager.installPackageFromURL(packageURL);
  }

  /**
   * Returns true if this package is already installed
   * 
   * @return true if this package is installed
   */
  @Override
  public boolean isInstalled() {
    File packageDir =
      new File(m_packageHome.getAbsoluteFile() + File.separator
        + m_packageMetaData.get("PackageName") + File.separator
        + "Description.props");
    return (packageDir.exists());
  }

  public static void main(String[] args) {
    String installed = args[0];
    String toCheckAgainst = args[1];
    String[] splitI = splitNameVersion(installed);
    String[] splitA = splitNameVersion(toCheckAgainst);

    try {

      if (splitA.length == 3) {

        System.out
          .println("Checking first version number against second constraint");
        VersionPackageConstraint.VersionComparison constraint =
          VersionPackageConstraint.getVersionComparison(splitA[1]);

        if (VersionPackageConstraint.checkConstraint(splitI[2], constraint,
          splitA[2])) {
          System.out.println(splitI[2] + " is compatible with " + args[1]);
        } else {
          System.out.println(splitI[2] + " is not compatible with " + args[1]);
        }

        Map baseMap = new HashMap();
        baseMap.put("PackageName", splitA[0]);
        baseMap.put("Version", splitA[2]);
        Package packageA = new DefaultPackage(null, null, baseMap);
        packageA.setPackageMetaData(baseMap);
        VersionPackageConstraint constrA =
          new VersionPackageConstraint(packageA);
        constrA.setVersionConstraint(constraint);

        if (splitI.length == 3) {

          VersionPackageConstraint.VersionComparison constraintI =
            VersionPackageConstraint.getVersionComparison(splitI[1]);

          Package packageI = (Package) packageA.clone();
          packageI.setPackageMetaDataElement(
            VersionPackageConstraint.VERSION_KEY, splitI[2]);
          VersionPackageConstraint constrI =
            new VersionPackageConstraint(packageI);
          constrI.setVersionConstraint(constraintI);

          PackageConstraint pc = null;
          if ((pc = constrI.checkConstraint(constrA)) != null) {
            System.out.println(constrI + " and " + constrA
              + " are compatible\n\n" + "compatible constraint " + pc);
          } else {
            System.out.println(constrI + " and " + constrA
              + " are not compatible");
          }
        } else {
          // TODO
        }

      } else {
        System.out
          .println("Checking first version number against second constraint");
        Map baseMap = new HashMap();
        baseMap.put("PackageName", splitI[0]);

        baseMap.put("Version", splitI[2]);
        Package p = new DefaultPackage(null, null, baseMap);

        VersionRangePackageConstraint c = new VersionRangePackageConstraint(p);

        VersionPackageConstraint.VersionComparison comp1 =
          VersionPackageConstraint.getVersionComparison(splitA[1]);
        VersionPackageConstraint.VersionComparison comp2 =
          VersionPackageConstraint.getVersionComparison(splitA[3]);
        c.setRangeConstraint(splitA[2], comp1, splitA[4], comp2);

        if (c.checkConstraint(p)) {
          System.out.println(splitI[2] + " is compatible with " + args[1]);
        } else {
          System.out.println(splitI[2] + " is not compatible with " + args[1]);
        }
      }

    } catch (Exception ex) {
      ex.printStackTrace();
    }

    /*
     * int compResult = VersionPackageConstraint.compare(splitI[2], splitA[2]);
     * if (versionOK(splitA[1], compResult)) { System.out.println("Compatible");
     * } else { System.out.println("Not ok"); }
     */
  }

  /**
   * Adds a key, value pair to the meta data map.
   * 
   * @param key the key
   * @param value the value to add
   * @throws Exception if there is no meta data map to add to.
   */
  @Override
  public void setPackageMetaDataElement(Object key, Object value)
    throws Exception {
    if (m_packageMetaData == null) {
      throw new Exception("[DefaultPackage] no meta data map has been set!");
    }

    // cast to Object is fine because our maps are Properties.
    Map meta = (Map) m_packageMetaData;

    meta.put(key, value);
  }

  @Override
  public String toString() {
    String packageName = getPackageMetaDataElement("PackageName").toString();
    String version = getPackageMetaDataElement("Version").toString();
    return packageName + " (" + version + ")";
  }
}




© 2015 - 2024 Weber Informatics LLC | Privacy Policy