org.jboss.dmr.ModelValue Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.dmr;
import java.io.DataOutput;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Set;
/**
* @author David M. Lloyd
*/
abstract class ModelValue implements Cloneable {
private final ModelType type;
protected ModelValue(final ModelType type) {
this.type = type;
}
ModelType getType() {
return type;
}
long asLong() {
throw new IllegalArgumentException();
}
long asLong(final long defVal) {
throw new IllegalArgumentException();
}
int asInt() {
throw new IllegalArgumentException();
}
int asInt(final int defVal) {
throw new IllegalArgumentException();
}
boolean asBoolean() {
throw new IllegalArgumentException();
}
boolean asBoolean(final boolean defVal) {
throw new IllegalArgumentException();
}
double asDouble() {
throw new IllegalArgumentException();
}
double asDouble(final double defVal) {
throw new IllegalArgumentException();
}
byte[] asBytes() {
throw new IllegalArgumentException();
}
BigDecimal asBigDecimal() {
throw new IllegalArgumentException();
}
BigInteger asBigInteger() {
throw new IllegalArgumentException();
}
abstract String asString();
Property asProperty() {
throw new IllegalArgumentException();
}
List asPropertyList() {
throw new IllegalArgumentException();
}
ValueExpression asExpression() {
throw new IllegalArgumentException();
}
ModelNode asObject() {
throw new IllegalArgumentException();
}
ModelNode getChild(final String name) {
throw new IllegalArgumentException();
}
ModelNode removeChild(final String name) {
throw new IllegalArgumentException();
}
ModelNode removeChild(final int index) {
throw new IllegalArgumentException();
}
ModelNode getChild(final int index) {
throw new IllegalArgumentException();
}
ModelNode addChild() {
throw new IllegalArgumentException();
}
ModelNode insertChild(int index) {
throw new IllegalArgumentException();
}
Set getKeys() {
throw new IllegalArgumentException();
}
List asList() {
throw new IllegalArgumentException();
}
ModelType asType() {
throw new IllegalArgumentException();
}
ModelValue protect() {
return this;
}
@Override
protected final ModelValue clone() {
try {
return (ModelValue) super.clone();
} catch (final CloneNotSupportedException e) {
throw new RuntimeException(e);
}
}
protected static String quote(final String orig) {
final int length = orig.length();
final StringBuilder builder = new StringBuilder(length + 32);
builder.append('"');
for (int i = 0; i < length; i = orig.offsetByCodePoints(i, 1)) {
final int cp = orig.codePointAt(i);
if (cp == '"' || cp == '\\') {
builder.append('\\').appendCodePoint(cp);
} else {
builder.appendCodePoint(cp);
}
}
builder.append('"');
return builder.toString();
}
/**
* Escapes the original string for inclusion in a JSON string.
* @param orig A string to be included in a JSON string.
* @return The string appropriately escaped to produce valid JSON.
*/
protected static String jsonEscape(final String orig) {
final int length = orig.length();
final StringBuilder builder = new StringBuilder(length + 32);
builder.append('"');
for (int i = 0; i < length; i = orig.offsetByCodePoints(i,1)) {
final int cp = orig.codePointAt(i);
switch (cp) {
case '"':
builder.append("\\\"");
break;
case '\\':
builder.append("\\\\");
break;
case '\b':
builder.append("\\b");
break;
case '\f':
builder.append("\\f");
break;
case '\n':
builder.append("\\n");
break;
case '\r':
builder.append("\\r");
break;
case '\t':
builder.append("\\t");
break;
default:
// Only escape control characters 0x00 through 0x1F (space is 0x20)
// Reference: http://www.ietf.org/rfc/rfc4627.txt
if (cp < 0x20) {
final String hexString = Integer.toHexString(cp);
builder.append("\\u");
for (int k = 0; k < 4 - hexString.length(); k++) {
builder.append('0');
}
builder.append(hexString.toUpperCase());
} else {
builder.appendCodePoint(cp);
}
}
}
builder.append('"');
return builder.toString();
}
ModelValue copy() {
return this;
}
static final ModelValue UNDEFINED = new ModelValue(ModelType.UNDEFINED) {
@Override
String asString() {
return "undefined";
}
@Override
long asLong(final long defVal) {
return defVal;
}
@Override
int asInt(final int defVal) {
return defVal;
}
@Override
boolean asBoolean(final boolean defVal) {
return defVal;
}
@Override
double asDouble(final double defVal) {
return defVal;
}
@Override
public boolean equals(final Object other) {
return other == this;
}
@Override
void formatAsJSON(final PrintWriter writer, final int indent, final boolean multiLine) {
writer.append("null");
}
@Override
void writeExternal(final DataOutput out) throws IOException {
out.write(ModelType.UNDEFINED.typeChar);
}
@Override
public int hashCode() {
return 7113;
}
};
@Override
public abstract boolean equals(Object other);
@Override
public abstract int hashCode();
/**
* Adds the number of indentations (4 spaces each) specified to the writer's output.
*
* @param writer The PrintWriter instance containing the current output.
* @param count The number of indentations to be written.
*/
protected static void indent(final PrintWriter writer, final int count) {
for (int i = 0; i < count; i++) {
writer.append(" ");
}
}
/**
* Formats the current value object as part of a DMR string.
*
* @param writer A PrintWriter instance containing the generated DMR string representation.
* @param indent The number of tabs to indent the current generated string.
* @param multiLine Flag indicating whether or not the string should begin on a new line.
*/
void format(final PrintWriter writer, final int indent, final boolean multiLine) {
writer.append(asString());
}
/**
* Formats the current value object as part of a JSON string.
*
* @param writer A PrintWriter instance containing the JSON string.
* @param indent The number of tabs to indent the current generated string.
* @param multiLine Flag that indicates whether or not the string should
* begin on a new line.
*/
void formatAsJSON(final PrintWriter writer, final int indent, final boolean multiLine) {
writer.append(asString());
}
@Override
public String toString() {
final StringWriter stringWriter = new StringWriter();
final PrintWriter writer = new PrintWriter(stringWriter, true);
writeString(writer, false);
return stringWriter.toString();
}
/**
* Outputs the DMR representation of this value to the supplied PrintWriter instance.
*
* @param writer A PrintWriter instance use to output the DMR string.
* @param compact Flag indicating whether or not to include new lines in the generated string representation.
*/
public void writeString(final PrintWriter writer, final boolean compact) {
format(writer, 0, !compact);
}
/**
* Converts this value to a JSON string representation.
*
* @param compact Flag indicating whether or not to include new lines in the generated string representation.
* @return The JSON formatted string representation of this value.
*/
public String toJSONString(final boolean compact) {
final StringWriter stringWriter = new StringWriter();
final PrintWriter writer = new PrintWriter(stringWriter, true);
writeJSONString(writer, compact);
return stringWriter.toString();
}
/**
* Outputs this value as a JSON string representation to the supplied PrintWriter instance.
*
* @param writer A PrintWriter instance use to output the JSON string.
* @param compact Flag indicating whether or not to include new lines in the generated string representation.
*/
public void writeJSONString(final PrintWriter writer, final boolean compact) {
formatAsJSON(writer, 0, !compact);
}
ModelValue resolve() {
return copy();
}
abstract void writeExternal(final DataOutput out) throws IOException;
boolean has(final int index) {
return false;
}
boolean has(final String key) {
return false;
}
ModelNode requireChild(final String name) throws NoSuchElementException {
throw new NoSuchElementException("No child '" + name + "' exists");
}
ModelNode requireChild(final int index) throws NoSuchElementException {
throw new NoSuchElementException("No child exists at index [" + index + "]");
}
}
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