package com.fasterxml.jackson.databind.node; import java.io.IOException; import com.fasterxml.jackson.core.*; import com.fasterxml.jackson.databind.SerializerProvider; /** * This concrete value class is used to contain boolean (true / false) * values. Only two instances are ever created, to minimize memory * usage. */ public class BooleanNode extends ValueNode { // // Just need two instances... public final static BooleanNode TRUE = new BooleanNode(true); public final static BooleanNode FALSE = new BooleanNode(false); private final boolean _value; private BooleanNode(boolean v) { _value = v; } public static BooleanNode getTrue() { return TRUE; } public static BooleanNode getFalse() { return FALSE; } public static BooleanNode valueOf(boolean b) { return b ? TRUE : FALSE; } @Override public JsonNodeType getNodeType() { return JsonNodeType.BOOLEAN; } @Override public JsonToken asToken() { return _value ? JsonToken.VALUE_TRUE : JsonToken.VALUE_FALSE; } @Override public boolean booleanValue() { return _value; } @Override public String asText() { return _value ? "true" : "false"; } @Override public boolean asBoolean() { return _value; } @Override public boolean asBoolean(boolean defaultValue) { return _value; } @Override public int asInt(int defaultValue) { return _value ? 1 : 0; } @Override public long asLong(long defaultValue) { return _value ? 1L : 0L; } @Override public double asDouble(double defaultValue) { return _value ? 1.0 : 0.0; } @Override public final void serialize(JsonGenerator g, SerializerProvider provider) throws IOException { g.writeBoolean(_value); } @Override public int hashCode() { return _value ? 3 : 1; } @Override public boolean equals(Object o) { /* 11-Mar-2013, tatu: Apparently ClassLoaders can manage to load * different instances, rendering identity comparisons broken. * So let's use value instead. */ if (o == this) return true; if (o == null) return false; if (!(o instanceof BooleanNode)) { return false; } return (_value == ((BooleanNode) o)._value); } }