org.pentaho.packageManagement.DefaultPackage Maven / Gradle / Ivy
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Allows the management of packages in a central package repository, for installation in the user's home directory.
/*
* Copyright (c) 2010 Pentaho Corporation. All rights reserved.
* This software was developed by Pentaho Corporation and is provided under the terms
* of the GNU Lesser General Public License, Version 2.1. You may not use
* this file except in compliance with the license. If you need a copy of the license,
* please go to http://www.gnu.org/licenses/lgpl-2.1.txt. The Original Code is Pentaho
* Package Manager. The Initial Developer is Pentaho Corporation.
*
* Software distributed under the GNU Lesser Public License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. Please refer to
* the license for the specific language governing your rights and limitations.
*/
/*
* DefaultPackage.java
* Copyright (c) 2009 Pentaho Corporation
*/
package org.pentaho.packageManagement;
import java.io.File;
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: 44030 $
*
*/
public class DefaultPackage extends Package {
/** Holds the home directory for installed packages */
protected File m_packageHome;
/** The package manager in use */
protected PackageManager m_packageManager;
/**
* Clone this package. Only makes a shallow copy of the meta
* data map
*
* @return a copy of this package
*/
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;
}
/**
* 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
*/
public URL getPackageURL() throws Exception {
String url = getPackageMetaDataElement("PackageURL").toString();
URL packageURL = new URL(url);
return packageURL;
}
/**
* Convenience method to return the name of this package.
*
* @return the name of this package.
*/
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.
*/
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.
*/
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);
}
}
}
}
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.
*/
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.
*/
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; */
}
/**
* 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.
*/
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.
*/
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.
*/
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").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.
*/
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
*/
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.
*/
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);
}
public String toString() {
String packageName = getPackageMetaDataElement("PackageName").toString();
String version = getPackageMetaDataElement("Version").toString();
return packageName + " (" + version + ")";
}
}
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