| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.lang.builder; |
| |
| import java.lang.reflect.AccessibleObject; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Modifier; |
| import java.util.Collection; |
| |
| import org.apache.commons.lang.ArrayUtils; |
| |
| /** |
| * <p>Assists in implementing {@link Object#equals(Object)} methods.</p> |
| * |
| * <p> This class provides methods to build a good equals method for any |
| * class. It follows rules laid out in |
| * <a href="http://java.sun.com/docs/books/effective/index.html">Effective Java</a> |
| * , by Joshua Bloch. In particular the rule for comparing <code>doubles</code>, |
| * <code>floats</code>, and arrays can be tricky. Also, making sure that |
| * <code>equals()</code> and <code>hashCode()</code> are consistent can be |
| * difficult.</p> |
| * |
| * <p>Two Objects that compare as equals must generate the same hash code, |
| * but two Objects with the same hash code do not have to be equal.</p> |
| * |
| * <p>All relevant fields should be included in the calculation of equals. |
| * Derived fields may be ignored. In particular, any field used in |
| * generating a hash code must be used in the equals method, and vice |
| * versa.</p> |
| * |
| * <p>Typical use for the code is as follows:</p> |
| * <pre> |
| * public boolean equals(Object obj) { |
| * if (obj == null) { return false; } |
| * if (obj == this) { return true; } |
| * if (obj.getClass() != getClass()) { |
| * return false; |
| * } |
| * MyClass rhs = (MyClass) obj; |
| * return new EqualsBuilder() |
| * .appendSuper(super.equals(obj)) |
| * .append(field1, rhs.field1) |
| * .append(field2, rhs.field2) |
| * .append(field3, rhs.field3) |
| * .isEquals(); |
| * } |
| * </pre> |
| * |
| * <p> Alternatively, there is a method that uses reflection to determine |
| * the fields to test. Because these fields are usually private, the method, |
| * <code>reflectionEquals</code>, uses <code>AccessibleObject.setAccessible</code> to |
| * change the visibility of the fields. This will fail under a security |
| * manager, unless the appropriate permissions are set up correctly. It is |
| * also slower than testing explicitly.</p> |
| * |
| * <p> A typical invocation for this method would look like:</p> |
| * <pre> |
| * public boolean equals(Object obj) { |
| * return EqualsBuilder.reflectionEquals(this, obj); |
| * } |
| * </pre> |
| * |
| * @author Apache Software Foundation |
| * @author <a href="mailto:steve.downey@netfolio.com">Steve Downey</a> |
| * @author Gary Gregory |
| * @author Pete Gieser |
| * @author Arun Mammen Thomas |
| * @since 1.0 |
| * @version $Id$ |
| */ |
| public class EqualsBuilder { |
| |
| /** |
| * If the fields tested are equals. |
| * The default value is <code>true</code>. |
| */ |
| private boolean isEquals = true; |
| |
| /** |
| * <p>Constructor for EqualsBuilder.</p> |
| * |
| * <p>Starts off assuming that equals is <code>true</code>.</p> |
| * @see Object#equals(Object) |
| */ |
| public EqualsBuilder() { |
| // do nothing for now. |
| } |
| |
| //------------------------------------------------------------------------- |
| |
| /** |
| * <p>This method uses reflection to determine if the two <code>Object</code>s |
| * are equal.</p> |
| * |
| * <p>It uses <code>AccessibleObject.setAccessible</code> to gain access to private |
| * fields. This means that it will throw a security exception if run under |
| * a security manager, if the permissions are not set up correctly. It is also |
| * not as efficient as testing explicitly.</p> |
| * |
| * <p>Transient members will be not be tested, as they are likely derived |
| * fields, and not part of the value of the Object.</p> |
| * |
| * <p>Static fields will not be tested. Superclass fields will be included.</p> |
| * |
| * @param lhs <code>this</code> object |
| * @param rhs the other object |
| * @return <code>true</code> if the two Objects have tested equals. |
| */ |
| public static boolean reflectionEquals(Object lhs, Object rhs) { |
| return reflectionEquals(lhs, rhs, false, null, null); |
| } |
| |
| /** |
| * <p>This method uses reflection to determine if the two <code>Object</code>s |
| * are equal.</p> |
| * |
| * <p>It uses <code>AccessibleObject.setAccessible</code> to gain access to private |
| * fields. This means that it will throw a security exception if run under |
| * a security manager, if the permissions are not set up correctly. It is also |
| * not as efficient as testing explicitly.</p> |
| * |
| * <p>Transient members will be not be tested, as they are likely derived |
| * fields, and not part of the value of the Object.</p> |
| * |
| * <p>Static fields will not be tested. Superclass fields will be included.</p> |
| * |
| * @param lhs <code>this</code> object |
| * @param rhs the other object |
| * @param excludeFields Collection of String field names to exclude from testing |
| * @return <code>true</code> if the two Objects have tested equals. |
| */ |
| public static boolean reflectionEquals(Object lhs, Object rhs, Collection /*String*/ excludeFields) { |
| return reflectionEquals(lhs, rhs, ReflectionToStringBuilder.toNoNullStringArray(excludeFields)); |
| } |
| |
| /** |
| * <p>This method uses reflection to determine if the two <code>Object</code>s |
| * are equal.</p> |
| * |
| * <p>It uses <code>AccessibleObject.setAccessible</code> to gain access to private |
| * fields. This means that it will throw a security exception if run under |
| * a security manager, if the permissions are not set up correctly. It is also |
| * not as efficient as testing explicitly.</p> |
| * |
| * <p>Transient members will be not be tested, as they are likely derived |
| * fields, and not part of the value of the Object.</p> |
| * |
| * <p>Static fields will not be tested. Superclass fields will be included.</p> |
| * |
| * @param lhs <code>this</code> object |
| * @param rhs the other object |
| * @param excludeFields array of field names to exclude from testing |
| * @return <code>true</code> if the two Objects have tested equals. |
| */ |
| public static boolean reflectionEquals(Object lhs, Object rhs, String[] excludeFields) { |
| return reflectionEquals(lhs, rhs, false, null, excludeFields); |
| } |
| |
| /** |
| * <p>This method uses reflection to determine if the two <code>Object</code>s |
| * are equal.</p> |
| * |
| * <p>It uses <code>AccessibleObject.setAccessible</code> to gain access to private |
| * fields. This means that it will throw a security exception if run under |
| * a security manager, if the permissions are not set up correctly. It is also |
| * not as efficient as testing explicitly.</p> |
| * |
| * <p>If the TestTransients parameter is set to <code>true</code>, transient |
| * members will be tested, otherwise they are ignored, as they are likely |
| * derived fields, and not part of the value of the <code>Object</code>.</p> |
| * |
| * <p>Static fields will not be tested. Superclass fields will be included.</p> |
| * |
| * @param lhs <code>this</code> object |
| * @param rhs the other object |
| * @param testTransients whether to include transient fields |
| * @return <code>true</code> if the two Objects have tested equals. |
| */ |
| public static boolean reflectionEquals(Object lhs, Object rhs, boolean testTransients) { |
| return reflectionEquals(lhs, rhs, testTransients, null, null); |
| } |
| |
| /** |
| * <p>This method uses reflection to determine if the two <code>Object</code>s |
| * are equal.</p> |
| * |
| * <p>It uses <code>AccessibleObject.setAccessible</code> to gain access to private |
| * fields. This means that it will throw a security exception if run under |
| * a security manager, if the permissions are not set up correctly. It is also |
| * not as efficient as testing explicitly.</p> |
| * |
| * <p>If the testTransients parameter is set to <code>true</code>, transient |
| * members will be tested, otherwise they are ignored, as they are likely |
| * derived fields, and not part of the value of the <code>Object</code>.</p> |
| * |
| * <p>Static fields will not be included. Superclass fields will be appended |
| * up to and including the specified superclass. A null superclass is treated |
| * as java.lang.Object.</p> |
| * |
| * @param lhs <code>this</code> object |
| * @param rhs the other object |
| * @param testTransients whether to include transient fields |
| * @param reflectUpToClass the superclass to reflect up to (inclusive), |
| * may be <code>null</code> |
| * @return <code>true</code> if the two Objects have tested equals. |
| * @since 2.0 |
| */ |
| public static boolean reflectionEquals(Object lhs, Object rhs, boolean testTransients, Class reflectUpToClass) { |
| return reflectionEquals(lhs, rhs, testTransients, reflectUpToClass, null); |
| } |
| |
| /** |
| * <p>This method uses reflection to determine if the two <code>Object</code>s |
| * are equal.</p> |
| * |
| * <p>It uses <code>AccessibleObject.setAccessible</code> to gain access to private |
| * fields. This means that it will throw a security exception if run under |
| * a security manager, if the permissions are not set up correctly. It is also |
| * not as efficient as testing explicitly.</p> |
| * |
| * <p>If the testTransients parameter is set to <code>true</code>, transient |
| * members will be tested, otherwise they are ignored, as they are likely |
| * derived fields, and not part of the value of the <code>Object</code>.</p> |
| * |
| * <p>Static fields will not be included. Superclass fields will be appended |
| * up to and including the specified superclass. A null superclass is treated |
| * as java.lang.Object.</p> |
| * |
| * @param lhs <code>this</code> object |
| * @param rhs the other object |
| * @param testTransients whether to include transient fields |
| * @param reflectUpToClass the superclass to reflect up to (inclusive), |
| * may be <code>null</code> |
| * @param excludeFields array of field names to exclude from testing |
| * @return <code>true</code> if the two Objects have tested equals. |
| * @since 2.0 |
| */ |
| public static boolean reflectionEquals(Object lhs, Object rhs, boolean testTransients, Class reflectUpToClass, |
| String[] excludeFields) { |
| if (lhs == rhs) { |
| return true; |
| } |
| if (lhs == null || rhs == null) { |
| return false; |
| } |
| // Find the leaf class since there may be transients in the leaf |
| // class or in classes between the leaf and root. |
| // If we are not testing transients or a subclass has no ivars, |
| // then a subclass can test equals to a superclass. |
| Class lhsClass = lhs.getClass(); |
| Class rhsClass = rhs.getClass(); |
| Class testClass; |
| if (lhsClass.isInstance(rhs)) { |
| testClass = lhsClass; |
| if (!rhsClass.isInstance(lhs)) { |
| // rhsClass is a subclass of lhsClass |
| testClass = rhsClass; |
| } |
| } else if (rhsClass.isInstance(lhs)) { |
| testClass = rhsClass; |
| if (!lhsClass.isInstance(rhs)) { |
| // lhsClass is a subclass of rhsClass |
| testClass = lhsClass; |
| } |
| } else { |
| // The two classes are not related. |
| return false; |
| } |
| EqualsBuilder equalsBuilder = new EqualsBuilder(); |
| try { |
| reflectionAppend(lhs, rhs, testClass, equalsBuilder, testTransients, excludeFields); |
| while (testClass.getSuperclass() != null && testClass != reflectUpToClass) { |
| testClass = testClass.getSuperclass(); |
| reflectionAppend(lhs, rhs, testClass, equalsBuilder, testTransients, excludeFields); |
| } |
| } catch (IllegalArgumentException e) { |
| // In this case, we tried to test a subclass vs. a superclass and |
| // the subclass has ivars or the ivars are transient and |
| // we are testing transients. |
| // If a subclass has ivars that we are trying to test them, we get an |
| // exception and we know that the objects are not equal. |
| return false; |
| } |
| return equalsBuilder.isEquals(); |
| } |
| |
| /** |
| * <p>Appends the fields and values defined by the given object of the |
| * given Class.</p> |
| * |
| * @param lhs the left hand object |
| * @param rhs the right hand object |
| * @param clazz the class to append details of |
| * @param builder the builder to append to |
| * @param useTransients whether to test transient fields |
| * @param excludeFields array of field names to exclude from testing |
| */ |
| private static void reflectionAppend( |
| Object lhs, |
| Object rhs, |
| Class clazz, |
| EqualsBuilder builder, |
| boolean useTransients, |
| String[] excludeFields) { |
| Field[] fields = clazz.getDeclaredFields(); |
| AccessibleObject.setAccessible(fields, true); |
| for (int i = 0; i < fields.length && builder.isEquals; i++) { |
| Field f = fields[i]; |
| if (!ArrayUtils.contains(excludeFields, f.getName()) |
| && (f.getName().indexOf('$') == -1) |
| && (useTransients || !Modifier.isTransient(f.getModifiers())) |
| && (!Modifier.isStatic(f.getModifiers()))) { |
| try { |
| builder.append(f.get(lhs), f.get(rhs)); |
| } catch (IllegalAccessException e) { |
| //this can't happen. Would get a Security exception instead |
| //throw a runtime exception in case the impossible happens. |
| throw new InternalError("Unexpected IllegalAccessException"); |
| } |
| } |
| } |
| } |
| |
| //------------------------------------------------------------------------- |
| |
| /** |
| * <p>Adds the result of <code>super.equals()</code> to this builder.</p> |
| * |
| * @param superEquals the result of calling <code>super.equals()</code> |
| * @return EqualsBuilder - used to chain calls. |
| * @since 2.0 |
| */ |
| public EqualsBuilder appendSuper(boolean superEquals) { |
| if (isEquals == false) { |
| return this; |
| } |
| isEquals = superEquals; |
| return this; |
| } |
| |
| //------------------------------------------------------------------------- |
| |
| /** |
| * <p>Test if two <code>Object</code>s are equal using their |
| * <code>equals</code> method.</p> |
| * |
| * @param lhs the left hand object |
| * @param rhs the right hand object |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(Object lhs, Object rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| if (lhs == rhs) { |
| return this; |
| } |
| if (lhs == null || rhs == null) { |
| this.setEquals(false); |
| return this; |
| } |
| Class lhsClass = lhs.getClass(); |
| if (!lhsClass.isArray()) { |
| // The simple case, not an array, just test the element |
| isEquals = lhs.equals(rhs); |
| } else if (lhs.getClass() != rhs.getClass()) { |
| // Here when we compare different dimensions, for example: a boolean[][] to a boolean[] |
| this.setEquals(false); |
| } |
| // 'Switch' on type of array, to dispatch to the correct handler |
| // This handles multi dimensional arrays of the same depth |
| else if (lhs instanceof long[]) { |
| append((long[]) lhs, (long[]) rhs); |
| } else if (lhs instanceof int[]) { |
| append((int[]) lhs, (int[]) rhs); |
| } else if (lhs instanceof short[]) { |
| append((short[]) lhs, (short[]) rhs); |
| } else if (lhs instanceof char[]) { |
| append((char[]) lhs, (char[]) rhs); |
| } else if (lhs instanceof byte[]) { |
| append((byte[]) lhs, (byte[]) rhs); |
| } else if (lhs instanceof double[]) { |
| append((double[]) lhs, (double[]) rhs); |
| } else if (lhs instanceof float[]) { |
| append((float[]) lhs, (float[]) rhs); |
| } else if (lhs instanceof boolean[]) { |
| append((boolean[]) lhs, (boolean[]) rhs); |
| } else { |
| // Not an array of primitives |
| append((Object[]) lhs, (Object[]) rhs); |
| } |
| return this; |
| } |
| |
| /** |
| * <p> |
| * Test if two <code>long</code> s are equal. |
| * </p> |
| * |
| * @param lhs |
| * the left hand <code>long</code> |
| * @param rhs |
| * the right hand <code>long</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(long lhs, long rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| isEquals = (lhs == rhs); |
| return this; |
| } |
| |
| /** |
| * <p>Test if two <code>int</code>s are equal.</p> |
| * |
| * @param lhs the left hand <code>int</code> |
| * @param rhs the right hand <code>int</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(int lhs, int rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| isEquals = (lhs == rhs); |
| return this; |
| } |
| |
| /** |
| * <p>Test if two <code>short</code>s are equal.</p> |
| * |
| * @param lhs the left hand <code>short</code> |
| * @param rhs the right hand <code>short</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(short lhs, short rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| isEquals = (lhs == rhs); |
| return this; |
| } |
| |
| /** |
| * <p>Test if two <code>char</code>s are equal.</p> |
| * |
| * @param lhs the left hand <code>char</code> |
| * @param rhs the right hand <code>char</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(char lhs, char rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| isEquals = (lhs == rhs); |
| return this; |
| } |
| |
| /** |
| * <p>Test if two <code>byte</code>s are equal.</p> |
| * |
| * @param lhs the left hand <code>byte</code> |
| * @param rhs the right hand <code>byte</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(byte lhs, byte rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| isEquals = (lhs == rhs); |
| return this; |
| } |
| |
| /** |
| * <p>Test if two <code>double</code>s are equal by testing that the |
| * pattern of bits returned by <code>doubleToLong</code> are equal.</p> |
| * |
| * <p>This handles NaNs, Infinities, and <code>-0.0</code>.</p> |
| * |
| * <p>It is compatible with the hash code generated by |
| * <code>HashCodeBuilder</code>.</p> |
| * |
| * @param lhs the left hand <code>double</code> |
| * @param rhs the right hand <code>double</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(double lhs, double rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| return append(Double.doubleToLongBits(lhs), Double.doubleToLongBits(rhs)); |
| } |
| |
| /** |
| * <p>Test if two <code>float</code>s are equal byt testing that the |
| * pattern of bits returned by doubleToLong are equal.</p> |
| * |
| * <p>This handles NaNs, Infinities, and <code>-0.0</code>.</p> |
| * |
| * <p>It is compatible with the hash code generated by |
| * <code>HashCodeBuilder</code>.</p> |
| * |
| * @param lhs the left hand <code>float</code> |
| * @param rhs the right hand <code>float</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(float lhs, float rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| return append(Float.floatToIntBits(lhs), Float.floatToIntBits(rhs)); |
| } |
| |
| /** |
| * <p>Test if two <code>booleans</code>s are equal.</p> |
| * |
| * @param lhs the left hand <code>boolean</code> |
| * @param rhs the right hand <code>boolean</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(boolean lhs, boolean rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| isEquals = (lhs == rhs); |
| return this; |
| } |
| |
| /** |
| * <p>Performs a deep comparison of two <code>Object</code> arrays.</p> |
| * |
| * <p>This also will be called for the top level of |
| * multi-dimensional, ragged, and multi-typed arrays.</p> |
| * |
| * @param lhs the left hand <code>Object[]</code> |
| * @param rhs the right hand <code>Object[]</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(Object[] lhs, Object[] rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| if (lhs == rhs) { |
| return this; |
| } |
| if (lhs == null || rhs == null) { |
| this.setEquals(false); |
| return this; |
| } |
| if (lhs.length != rhs.length) { |
| this.setEquals(false); |
| return this; |
| } |
| for (int i = 0; i < lhs.length && isEquals; ++i) { |
| append(lhs[i], rhs[i]); |
| } |
| return this; |
| } |
| |
| /** |
| * <p>Deep comparison of array of <code>long</code>. Length and all |
| * values are compared.</p> |
| * |
| * <p>The method {@link #append(long, long)} is used.</p> |
| * |
| * @param lhs the left hand <code>long[]</code> |
| * @param rhs the right hand <code>long[]</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(long[] lhs, long[] rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| if (lhs == rhs) { |
| return this; |
| } |
| if (lhs == null || rhs == null) { |
| this.setEquals(false); |
| return this; |
| } |
| if (lhs.length != rhs.length) { |
| this.setEquals(false); |
| return this; |
| } |
| for (int i = 0; i < lhs.length && isEquals; ++i) { |
| append(lhs[i], rhs[i]); |
| } |
| return this; |
| } |
| |
| /** |
| * <p>Deep comparison of array of <code>int</code>. Length and all |
| * values are compared.</p> |
| * |
| * <p>The method {@link #append(int, int)} is used.</p> |
| * |
| * @param lhs the left hand <code>int[]</code> |
| * @param rhs the right hand <code>int[]</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(int[] lhs, int[] rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| if (lhs == rhs) { |
| return this; |
| } |
| if (lhs == null || rhs == null) { |
| this.setEquals(false); |
| return this; |
| } |
| if (lhs.length != rhs.length) { |
| this.setEquals(false); |
| return this; |
| } |
| for (int i = 0; i < lhs.length && isEquals; ++i) { |
| append(lhs[i], rhs[i]); |
| } |
| return this; |
| } |
| |
| /** |
| * <p>Deep comparison of array of <code>short</code>. Length and all |
| * values are compared.</p> |
| * |
| * <p>The method {@link #append(short, short)} is used.</p> |
| * |
| * @param lhs the left hand <code>short[]</code> |
| * @param rhs the right hand <code>short[]</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(short[] lhs, short[] rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| if (lhs == rhs) { |
| return this; |
| } |
| if (lhs == null || rhs == null) { |
| this.setEquals(false); |
| return this; |
| } |
| if (lhs.length != rhs.length) { |
| this.setEquals(false); |
| return this; |
| } |
| for (int i = 0; i < lhs.length && isEquals; ++i) { |
| append(lhs[i], rhs[i]); |
| } |
| return this; |
| } |
| |
| /** |
| * <p>Deep comparison of array of <code>char</code>. Length and all |
| * values are compared.</p> |
| * |
| * <p>The method {@link #append(char, char)} is used.</p> |
| * |
| * @param lhs the left hand <code>char[]</code> |
| * @param rhs the right hand <code>char[]</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(char[] lhs, char[] rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| if (lhs == rhs) { |
| return this; |
| } |
| if (lhs == null || rhs == null) { |
| this.setEquals(false); |
| return this; |
| } |
| if (lhs.length != rhs.length) { |
| this.setEquals(false); |
| return this; |
| } |
| for (int i = 0; i < lhs.length && isEquals; ++i) { |
| append(lhs[i], rhs[i]); |
| } |
| return this; |
| } |
| |
| /** |
| * <p>Deep comparison of array of <code>byte</code>. Length and all |
| * values are compared.</p> |
| * |
| * <p>The method {@link #append(byte, byte)} is used.</p> |
| * |
| * @param lhs the left hand <code>byte[]</code> |
| * @param rhs the right hand <code>byte[]</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(byte[] lhs, byte[] rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| if (lhs == rhs) { |
| return this; |
| } |
| if (lhs == null || rhs == null) { |
| this.setEquals(false); |
| return this; |
| } |
| if (lhs.length != rhs.length) { |
| this.setEquals(false); |
| return this; |
| } |
| for (int i = 0; i < lhs.length && isEquals; ++i) { |
| append(lhs[i], rhs[i]); |
| } |
| return this; |
| } |
| |
| /** |
| * <p>Deep comparison of array of <code>double</code>. Length and all |
| * values are compared.</p> |
| * |
| * <p>The method {@link #append(double, double)} is used.</p> |
| * |
| * @param lhs the left hand <code>double[]</code> |
| * @param rhs the right hand <code>double[]</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(double[] lhs, double[] rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| if (lhs == rhs) { |
| return this; |
| } |
| if (lhs == null || rhs == null) { |
| this.setEquals(false); |
| return this; |
| } |
| if (lhs.length != rhs.length) { |
| this.setEquals(false); |
| return this; |
| } |
| for (int i = 0; i < lhs.length && isEquals; ++i) { |
| append(lhs[i], rhs[i]); |
| } |
| return this; |
| } |
| |
| /** |
| * <p>Deep comparison of array of <code>float</code>. Length and all |
| * values are compared.</p> |
| * |
| * <p>The method {@link #append(float, float)} is used.</p> |
| * |
| * @param lhs the left hand <code>float[]</code> |
| * @param rhs the right hand <code>float[]</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(float[] lhs, float[] rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| if (lhs == rhs) { |
| return this; |
| } |
| if (lhs == null || rhs == null) { |
| this.setEquals(false); |
| return this; |
| } |
| if (lhs.length != rhs.length) { |
| this.setEquals(false); |
| return this; |
| } |
| for (int i = 0; i < lhs.length && isEquals; ++i) { |
| append(lhs[i], rhs[i]); |
| } |
| return this; |
| } |
| |
| /** |
| * <p>Deep comparison of array of <code>boolean</code>. Length and all |
| * values are compared.</p> |
| * |
| * <p>The method {@link #append(boolean, boolean)} is used.</p> |
| * |
| * @param lhs the left hand <code>boolean[]</code> |
| * @param rhs the right hand <code>boolean[]</code> |
| * @return EqualsBuilder - used to chain calls. |
| */ |
| public EqualsBuilder append(boolean[] lhs, boolean[] rhs) { |
| if (isEquals == false) { |
| return this; |
| } |
| if (lhs == rhs) { |
| return this; |
| } |
| if (lhs == null || rhs == null) { |
| this.setEquals(false); |
| return this; |
| } |
| if (lhs.length != rhs.length) { |
| this.setEquals(false); |
| return this; |
| } |
| for (int i = 0; i < lhs.length && isEquals; ++i) { |
| append(lhs[i], rhs[i]); |
| } |
| return this; |
| } |
| |
| /** |
| * <p>Returns <code>true</code> if the fields that have been checked |
| * are all equal.</p> |
| * |
| * @return boolean |
| */ |
| public boolean isEquals() { |
| return this.isEquals; |
| } |
| |
| /** |
| * Sets the <code>isEquals</code> value. |
| * |
| * @param isEquals The value to set. |
| * @since 2.1 |
| */ |
| protected void setEquals(boolean isEquals) { |
| this.isEquals = isEquals; |
| } |
| |
| /** |
| * Reset the EqualsBuilder so you can use the same object again |
| * @since 2.5 |
| */ |
| public void reset() { |
| this.isEquals = true; |
| } |
| } |
