Examples of org.apache.commons.lang3.builder.CompareToBuilder

Package org.apache.commons.lang3.builder

Examples of org.apache.commons.lang3.builder.CompareToBuilder

org.apache.commons.lang3.builder.HashCodeBuilder
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 are {@link #reflectionCompare(Object,Object) reflectionCompare} methods that usereflection 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 Apache Software Foundation @author Steve Downey @author Gary Gregory @author Pete Gieser @since 1.0 @version $Id: CompareToBuilder.java 965941 2010-07-20 18:10:34Z bayard $

        {
            return false;
        }


        DefaultExpressionEngineSymbols c = (DefaultExpressionEngineSymbols) obj;
        return new EqualsBuilder()
                .append(getPropertyDelimiter(), c.getPropertyDelimiter())
                .append(getEscapedDelimiter(), c.getEscapedDelimiter())
                .append(getIndexStart(), c.getIndexStart())
                .append(getIndexEnd(), c.getIndexEnd())
                .append(getAttributeStart(), c.getAttributeStart())

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        {
            return false;
        }


        FileLocator c = (FileLocator) obj;
        return new EqualsBuilder().append(getFileName(), c.getFileName())
                .append(getBasePath(), c.getBasePath())
                .append(sourceURLAsString(), c.sourceURLAsString())
                .append(getEncoding(), c.getEncoding())
                .append(getFileSystem(), c.getFileSystem())
                .append(getLocationStrategy(), c.getLocationStrategy())

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    {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;


        StatsMetadata that = (StatsMetadata) o;
        return new EqualsBuilder()
                       .append(estimatedRowSize, that.estimatedRowSize)
                       .append(estimatedColumnCount, that.estimatedColumnCount)
                       .append(replayPosition, that.replayPosition)
                       .append(minTimestamp, that.minTimestamp)
                       .append(maxTimestamp, that.maxTimestamp)

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    @Override
    public final boolean equals(Object object)
    {
        if (object instanceof RowSorter)
        {
            return new EqualsBuilder()
                .append(this.property, ((RowSorter) object).property)
                .append(this.columnIndex, ((RowSorter) object).columnIndex)
                .isEquals();
        }

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        if (!(object instanceof PortletHref))
        {
            return false;
        }
        PortletHref rhs = (PortletHref) object;
        return new EqualsBuilder()
            .append(this.isAction, rhs.isAction)
            .append(this.parameters, rhs.parameters)
            .append(this.requestedMode, rhs.requestedMode)
            .append(this.requestedState, rhs.requestedState)
            .append(this.requestedSecure, rhs.requestedSecure)

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            return false;
        }
        DefaultHref rhs = (DefaultHref) object;


        // "parameters" can't be added directly, since equals on HashMap doesn't return true with equal key/values
        return new EqualsBuilder()
            .append(this.parameters.keySet(), rhs.parameters.keySet())
            .append(this.parameters.values().toArray(), rhs.parameters.values().toArray())
            .append(this.url, rhs.url)
            .append(this.anchor, rhs.anchor)
            .isEquals();

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    }


    @Override
    public int hashCode()
    {
        HashCodeBuilder builder = new HashCodeBuilder(373, 75437)
                .append(metadata)
                .append(deletionInfo());
        for (Cell cell : this)
            builder.append(cell);
        return builder.toHashCode();
    }

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    }


    @Override
    public int hashCode()
    {
        HashCodeBuilder builder = new HashCodeBuilder(373, 75437)
                .append(metadata)
                .append(deletionInfo());
        for (Column column : this)
            builder.append(column);
        return builder.toHashCode();
    }

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     * 
     * @see java.lang.Object#hashCode()
     */
    @Override
    public int hashCode() {
      return new HashCodeBuilder().append(rowKey).append(colIndex).toHashCode();
    }

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      return false;
  }
  
  @Override
  public int hashCode() {
    return new HashCodeBuilder()
        .append(this.id)
        .append(this.name)
        .append(this.address)
        .append(this.nip)
        .hashCode();

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