package com.atlassian.activeobjects.config;
   
   import org.apache.commons.lang3.builder.EqualsBuilder;
   import org.apache.commons.lang3.builder.HashCodeBuilder;
   import org.osgi.framework.Bundle;
   
   import static com.google.common.base.Preconditions.checkNotNull;
   
   /**
   * <p>Represents a key used throughout the ActiveObjects plugin to store information
   * about configuration etc. against each plugin using an {@link com.atlassian.activeobjects.external.ActiveObjects}
   * service.</p>
   * <p>So are {@link #equals(Object)} and {@link #hashCode()} as this class can be used and IS used as
   * key in Maps and other such collections.</p>
   */
  public final class PluginKey {
      private final String bundleSymbolicName;
  
      PluginKey(String bundleSymbolicName) {
          this.bundleSymbolicName = checkNotNull(bundleSymbolicName);
      }
  
      public static PluginKey fromBundle(Bundle bundle) {
          checkNotNull(bundle);
          return new PluginKey(bundle.getSymbolicName());
      }
  
      public String asString() {
          return bundleSymbolicName;
      }
  
      @Override
      public String toString() {
          return asString();
      }
  
      @Override
      public int hashCode() {
          return new HashCodeBuilder(3, 11).append(bundleSymbolicName).toHashCode();
      }
  
      @Override
      public boolean equals(Object o) {
          if (o == null) {
              return false;
          }
          if (o == this) {
              return true;
          }
          if (o.getClass() != getClass()) {
              return false;
          }
  
          final PluginKey pluginKey = (PluginKey) o;
          return new EqualsBuilder().append(bundleSymbolicName, pluginKey.bundleSymbolicName).isEquals();
      }
  }