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90 lines
2.2 KiB
90 lines
2.2 KiB
/*
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* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.text;
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/**
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* An Annotation object is used as a wrapper for a text attribute value if
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* the attribute has annotation characteristics. These characteristics are:
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* <ul>
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* <li>The text range that the attribute is applied to is critical to the
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* semantics of the range. That means, the attribute cannot be applied to subranges
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* of the text range that it applies to, and, if two adjacent text ranges have
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* the same value for this attribute, the attribute still cannot be applied to
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* the combined range as a whole with this value.
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* <li>The attribute or its value usually do no longer apply if the underlying text is
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* changed.
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* </ul>
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*
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* An example is grammatical information attached to a sentence:
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* For the previous sentence, you can say that "an example"
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* is the subject, but you cannot say the same about "an", "example", or "exam".
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* When the text is changed, the grammatical information typically becomes invalid.
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* Another example is Japanese reading information (yomi).
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*
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* <p>
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* Wrapping the attribute value into an Annotation object guarantees that
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* adjacent text runs don't get merged even if the attribute values are equal,
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* and indicates to text containers that the attribute should be discarded if
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* the underlying text is modified.
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*
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* @see AttributedCharacterIterator
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* @since 1.2
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*/
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public class Annotation {
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/**
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* Constructs an annotation record with the given value, which
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* may be null.
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*
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* @param value the value of the attribute
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*/
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public Annotation(Object value) {
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this.value = value;
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}
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/**
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* Returns the value of the attribute, which may be null.
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*
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* @return the value of the attribute
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*/
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public Object getValue() {
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return value;
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}
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/**
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* Returns the String representation of this Annotation.
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*
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* @return the {@code String} representation of this {@code Annotation}
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*/
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public String toString() {
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return getClass().getName() + "[value=" + value + "]";
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}
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private Object value;
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};
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