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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 return message = message == null ? String.valueOf(charSequence) : message ;
65 }
66
67 @Override
68 public void formatTo(final StringBuilder buffer) {
69 buffer.append(message != null ? message : charSequence);
70 }
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76 @Override
77 public String getFormat() {
78 return getFormattedMessage();
79 }
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85 @Override
86 public Object[] getParameters() {
87 return null;
88 }
89
90 @Override
91 public boolean equals(final Object o) {
92 if (this == o) {
93 return true;
94 }
95 if (o == null || getClass() != o.getClass()) {
96 return false;
97 }
98
99 final SimpleMessage that = (SimpleMessage) o;
100
101 return !(charSequence != null ? !charSequence.equals(that.charSequence) : that.charSequence != null);
102 }
103
104 @Override
105 public int hashCode() {
106 return charSequence != null ? charSequence.hashCode() : 0;
107 }
108
109 @Override
110 public String toString() {
111 return getFormattedMessage();
112 }
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119 @Override
120 public Throwable getThrowable() {
121 return null;
122 }
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127 @Override
128 public int length() {
129 return charSequence == null ? 0 : charSequence.length();
130 }
131
132 @Override
133 public char charAt(final int index) {
134 return charSequence.charAt(index);
135 }
136
137 @Override
138 public CharSequence subSequence(final int start, final int end) {
139 return charSequence.subSequence(start, end);
140 }
141
142
143 private void writeObject(final ObjectOutputStream out) throws IOException {
144 getFormattedMessage();
145 out.defaultWriteObject();
146 }
147
148 private void readObject(final ObjectInputStream in) throws IOException, ClassNotFoundException {
149 in.defaultReadObject();
150 charSequence = message;
151 }
152 }