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The free Java library for Asterisk PBX integration.

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package org.asteriskjava.pbx;

/**
 * Represents an asterisk dial plan extension such as: [njr-operator]
 * njr-inbound,1,xxxxx In the above example njr-inbound is the dialplan
 * extension. This class primarily exists to stop common mistakes that can occur
 * if we pass this around as a simple string.
 *
 * @author bsutton
 */
public class DialPlanExtension implements EndPoint {

    // the dial plan extension.
    String _extension;
    final boolean _empty;

    public DialPlanExtension(String extension) {
        if (extension == null || extension.trim().length() == 0) {
            this._empty = true;
            this._extension = "";
        } else {
            this._extension = extension.trim();
            this._empty = false;
        }
    }

    @Override
    public int compareTo(EndPoint rhs) {
        return this._extension.compareTo(rhs.getSimpleName());
    }

    @Override
    public boolean isSame(EndPoint rhs) {
        return this.compareTo(rhs) == 0;
    }

    @Override
    public boolean isLocal() {
        return false;
    }

    @Override
    public boolean isSIP() {
        return false;
    }

    /**
     * The same as getSimpleName as in this case the Tech is really just an
     * identifier rather than a legitimate tech that the pbx understands.
     */
    @Override
    public String getFullyQualifiedName() {
        return this._extension;
    }

    @Override
    public String getSimpleName() {
        return this._extension;
    }

    @Override
    public String getSIPSimpleName() {
        throw new UnsupportedOperationException();
    }

    @Override
    public boolean isUnknown() {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public TechType getTech() {
        return TechType.DIALPLAN;
    }

    public String toString() {
        return this._extension;
    }

    @Override
    public boolean isEmpty() {
        return false;
    }
}