79 lines
1.9 KiB
Java
79 lines
1.9 KiB
Java
package org.bukkit.metadata;
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import java.lang.ref.WeakReference;
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import org.apache.commons.lang.Validate;
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import org.bukkit.plugin.Plugin;
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import org.bukkit.util.NumberConversions;
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/**
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* Optional base class for facilitating MetadataValue implementations.
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* <p>
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* This provides all the conversion functions for MetadataValue
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* so that writing an implementation of MetadataValue is as simple
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* as implementing value() and invalidate().
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*/
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public abstract class MetadataValueAdapter implements MetadataValue {
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protected final WeakReference<Plugin> owningPlugin;
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protected MetadataValueAdapter(Plugin owningPlugin) {
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Validate.notNull(owningPlugin, "owningPlugin cannot be null");
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this.owningPlugin = new WeakReference<Plugin>(owningPlugin);
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}
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public Plugin getOwningPlugin() {
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return owningPlugin.get();
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}
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public int asInt() {
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return NumberConversions.toInt(value());
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}
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public float asFloat() {
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return NumberConversions.toFloat(value());
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}
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public double asDouble() {
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return NumberConversions.toDouble(value());
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}
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public long asLong() {
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return NumberConversions.toLong(value());
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}
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public short asShort() {
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return NumberConversions.toShort(value());
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}
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public byte asByte() {
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return NumberConversions.toByte(value());
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}
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public boolean asBoolean() {
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Object value = value();
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if (value instanceof Boolean) {
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return (Boolean) value;
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}
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if (value instanceof Number) {
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return ((Number) value).intValue() != 0;
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}
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if (value instanceof String) {
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return Boolean.parseBoolean((String) value);
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}
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return value != null;
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}
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public String asString() {
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Object value = value();
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if (value == null) {
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return "";
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}
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return value.toString();
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}
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}
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