Examples of org.apache.commons.lang.builder.CompareToBuilder

org.apache.commons.lang.builder.CompareToBuilder
Assists in implementing {@link java.lang.Comparable#compareTo(Object)} methods.It is consistent with equals(Object) and hashcode() built with {@link EqualsBuilder} and{@link HashCodeBuilder}.

Two Objects that compare equal using equals(Object) should normally also compare equal using compareTo(Object).

All relevant fields should be included in the calculation of the comparison. Derived fields may be ignored. The same fields, in the same order, should be used in both compareTo(Object) and equals(Object).

To use this class write code as follows:
```
 public class MyClass { String field1; int field2; boolean field3; ... public int compareTo(Object o) { MyClass myClass = (MyClass) o; return new CompareToBuilder() .appendSuper(super.compareTo(o) .append(this.field1, myClass.field1) .append(this.field2, myClass.field2) .append(this.field3, myClass.field3) .toComparison(); } } 
```
Alternatively, there is are {@link #reflectionCompare reflectionCompare} method that usesreflection to determine the fields to append. Because fields can be private, reflectionCompare uses {@link java.lang.reflect.AccessibleObject#setAccessible(boolean)} tobypass normal access control checks. This will fail under a security manager, unless the appropriate permissions are set up correctly. It is also slower than appending explicitly.

A typical implementation of compareTo(Object) using reflectionCompare looks like:
```
 public int compareTo(Object o) { return CompareToBuilder.reflectionCompare(this, o); } 
```
@see java.lang.Comparable @see java.lang.Object#equals(Object) @see java.lang.Object#hashCode() @see EqualsBuilder @see HashCodeBuilder @author Steve Downey @author Stephen Colebourne @author Gary Gregory @author Pete Gieser @since 1.0 @version $Id: CompareToBuilder.java 161243 2005-04-14 04:30:28Z ggregory $

    public Map toMap() {
        return command.toMap();
    }


    public int compareTo(final CenterUserImpl other) {
        return new CompareToBuilder().append(command, other.command).toComparison();
    }

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    public String toString() {
        return new ToStringBuilder(this, ToStringStyle.MULTI_LINE_STYLE).append("map", map).toString();
    }


    public int compareTo(final CenterUserCommand other) {
        return new CompareToBuilder().append(map, other.toMap()).toComparison();
    }

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    public int hashCode() {
        return new HashCodeBuilder().append(command).toHashCode();
    }


    public int compareTo(final CenterGroupImpl other) {
        return new CompareToBuilder().append(command, other.command).toComparison();
    }

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    public String toString() {
        return new ToStringBuilder(this, ToStringStyle.MULTI_LINE_STYLE).append("command", command).toString();
    }


    public int compareTo(final CenterImpl other) {
        return new CompareToBuilder().append(command, other.command).toComparison();
    }

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    public void setEnabled(boolean enabled) {
        map.put(CenterKeys.enabled, enabled);
    }


    public int compareTo(final CenterCommand other) {
        return new CompareToBuilder().append(map, other.toMap()).toComparison();
    }

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    public boolean isNew() {
        return getId().equals(Constants.ID_NEW);
    }


    public int compareTo(final CenterGroupCommand other) {
        return new CompareToBuilder().append(map, other.map).toComparison();
    }

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     * Comparability is based on userBookmarkID.
     * 
     * @see java.lang.Comparable#compareTo(java.lang.Object)
     */
    public int compareTo(Post post) {
        return new CompareToBuilder().append(userBookmarkID,
                post.userBookmarkID).toComparison();
    }

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     * Comparability is based on value, usageScore, postCount, then userCount.
     * 
     * @see java.lang.Comparable#compareTo(java.lang.Object)
     */
    public int compareTo(Tag tag) {
        return new CompareToBuilder().append(value, tag.value).append(
                usageScore, tag.usageScore).append(postCount, tag.postCount)
                .append(userCount, tag.userCount).toComparison();
    }

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     * Comparability is based on entry, created date, then updated date.
     * 
     * @see java.lang.Comparable#compareTo(java.lang.Object)
     */
    public int compareTo(Comment comment) {
        return new CompareToBuilder().append(entry, comment.entry).append(
                created, comment.created).append(updated, comment.updated)
                .toComparison();
    }

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     * apiVersion, then bibliotechVersion.
     * 
     * @see java.lang.Comparable#compareTo(java.lang.Object)
     */
    public int compareTo(Message message) {
        return new CompareToBuilder().append(code, message.code).append(
                success, message.success).append(this.message, message.message)
                .append(location, message.location).append(user, message.user)
                .append(apiVersion, message.apiVersion).append(
                        bibliotechVersion, message.bibliotechVersion)
                .toComparison();

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