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17 package org.apache.logging.log4j.message;
18
19 import java.io.IOException;
20 import java.io.ObjectInputStream;
21 import java.io.ObjectOutputStream;
22 import org.apache.logging.log4j.util.StringBuilderFormattable;
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26
27 public class SimpleMessage implements Message, StringBuilderFormattable, CharSequence {
28 private static final long serialVersionUID = -8398002534962715992L;
29
30 private String message;
31 private transient CharSequence charSequence;
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34
35
36 public SimpleMessage() {
37 this(null);
38 }
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43
44 public SimpleMessage(final String message) {
45 this.message = message;
46 this.charSequence = message;
47 }
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52
53 public SimpleMessage(final CharSequence charSequence) {
54
55 this.charSequence = charSequence;
56 }
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61
62 @Override
63 public String getFormattedMessage() {
64 if (message == null) {
65 message = String.valueOf(charSequence);
66 }
67 return message;
68 }
69
70 @Override
71 public void formatTo(final StringBuilder buffer) {
72 buffer.append(charSequence);
73 }
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79 @Override
80 public String getFormat() {
81 return getFormattedMessage();
82 }
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87
88 @Override
89 public Object[] getParameters() {
90 return null;
91 }
92
93 @Override
94 public boolean equals(final Object o) {
95 if (this == o) {
96 return true;
97 }
98 if (o == null || getClass() != o.getClass()) {
99 return false;
100 }
101
102 final SimpleMessage that = (SimpleMessage) o;
103
104 return !(charSequence != null ? !charSequence.equals(that.charSequence) : that.charSequence != null);
105 }
106
107 @Override
108 public int hashCode() {
109 return charSequence != null ? charSequence.hashCode() : 0;
110 }
111
112 @Override
113 public String toString() {
114 return getFormattedMessage();
115 }
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122 @Override
123 public Throwable getThrowable() {
124 return null;
125 }
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130 @Override
131 public int length() {
132 return charSequence == null ? 0 : charSequence.length();
133 }
134
135 @Override
136 public char charAt(final int index) {
137 return charSequence.charAt(index);
138 }
139
140 @Override
141 public CharSequence subSequence(final int start, final int end) {
142 return charSequence.subSequence(start, end);
143 }
144
145
146 private void writeObject(final ObjectOutputStream out) throws IOException {
147 getFormattedMessage();
148 out.defaultWriteObject();
149 }
150
151 private void readObject(final ObjectInputStream in) throws IOException, ClassNotFoundException {
152 in.defaultReadObject();
153 charSequence = message;
154 }
155 }