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org.apache.jackrabbit.commons.cnd.CompactNodeTypeDefWriter Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jackrabbit.commons.cnd;
import org.apache.jackrabbit.JcrConstants;
import org.apache.jackrabbit.commons.query.qom.Operator;
import org.apache.jackrabbit.util.ISO9075;
import org.apache.jackrabbit.util.Text;
import javax.jcr.NamespaceRegistry;
import javax.jcr.PropertyType;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.Value;
import javax.jcr.nodetype.NodeDefinition;
import javax.jcr.nodetype.NodeTypeDefinition;
import javax.jcr.nodetype.PropertyDefinition;
import javax.jcr.query.qom.QueryObjectModelConstants;
import javax.jcr.version.OnParentVersionAction;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
/**
* Prints node type defs in a compact notation
* Print Format:
* <ex = "http://apache.org/jackrabbit/example">
* [ex:NodeType] > ex:ParentType1, ex:ParentType2
* orderable mixin
* - ex:property (STRING) = 'default1', 'default2'
* primary mandatory autocreated protected multiple VERSION
* < 'constraint1', 'constraint2'
* + ex:node (ex:reqType1, ex:reqType2) = ex:defaultType
* mandatory autocreated protected multiple VERSION
*/
public class CompactNodeTypeDefWriter {
/**
* the indention string
*/
private static final String INDENT = " ";
private static final String ANY = "*";
/**
* Helper to retrieve the namespace URI for a given prefix.
*/
private final NamespaceMapping nsMapping;
/**
* the underlying writer
*/
private Writer out;
/**
* special writer used for namespaces
*/
private Writer nsWriter;
/**
* namespaces(prefixes) that are used
*/
private final Set usedNamespaces = new HashSet();
/**
* Creates a new nodetype writer based on a session
*
* @param out the underlying writer
* @param session repository session
* @param includeNS if true all used namespace decl. are also
* written to the writer
*/
public CompactNodeTypeDefWriter(Writer out, final Session session, boolean includeNS) {
this(out, new DefaultNamespaceMapping(session), includeNS);
}
/**
* Creates a new nodetype writer based on a session
*
* @param out the underlying writer
* @param nsMapping the mapping from prefix to namespace URI.
* @param includeNS if true all used namespace decl. are also
* written to the writer
*/
public CompactNodeTypeDefWriter(Writer out, NamespaceMapping nsMapping, boolean includeNS) {
this.nsMapping = nsMapping;
if (includeNS) {
this.out = new StringWriter();
this.nsWriter = out;
} else {
this.out = out;
this.nsWriter = null;
}
}
/**
* Writes the given list of QNodeTypeDefinition to the output writer including the
* used namespaces.
*
* @param defs collection of definitions
* @param session session
* @param out output writer
* @throws java.io.IOException if an I/O error occurs
*/
public static void write(Collection defs,
Session session, Writer out) throws IOException {
CompactNodeTypeDefWriter w = new CompactNodeTypeDefWriter(out, session, true);
for (NodeTypeDefinition def : defs) {
w.write(def);
}
w.close();
}
/**
* Writes the given list of QNodeTypeDefinition to the output writer
* including the used namespaces.
*
* @param defs collection of definitions
* @param nsMapping the mapping from prefix to namespace URI.
* @param out output writer
* @throws java.io.IOException if an I/O error occurs
*/
public static void write(Collection defs,
NamespaceMapping nsMapping, Writer out) throws IOException {
CompactNodeTypeDefWriter w = new CompactNodeTypeDefWriter(out, nsMapping, true);
for (NodeTypeDefinition def : defs) {
w.write(def);
}
w.close();
}
/**
* Write one NodeTypeDefinition to this writer
*
* @param ntd node type definition
* @throws IOException if an I/O error occurs
*/
public void write(NodeTypeDefinition ntd) throws IOException {
writeName(ntd);
writeSupertypes(ntd);
writeOptions(ntd);
PropertyDefinition[] pdefs = ntd.getDeclaredPropertyDefinitions();
if (pdefs != null) {
for (PropertyDefinition pd : pdefs) {
writePropDef(pd);
}
}
NodeDefinition[] ndefs = ntd.getDeclaredChildNodeDefinitions();
if (ndefs != null) {
for (NodeDefinition nd : ndefs) {
writeNodeDef(nd);
}
}
out.write("\n\n");
}
/**
* Write a namespace declaration to this writer. Note, that this method
* has no effect if there is no extra namespace write present.
*
* @param prefix namespace prefix
* @throws IOException if an I/O error occurs
*/
public void writeNamespaceDeclaration(String prefix) throws IOException {
if (nsWriter != null && !usedNamespaces.contains(prefix)) {
usedNamespaces.add(prefix);
nsWriter.write("<'");
nsWriter.write(prefix);
nsWriter.write("'='");
nsWriter.write(escape(nsMapping.getNamespaceURI(prefix)));
nsWriter.write("'>\n");
}
}
/**
* Flushes all pending write operations and Closes this writer. please note,
* that the underlying writer remains open.
*
* @throws IOException if an I/O error occurs
*/
public void close() throws IOException {
if (nsWriter != null) {
nsWriter.write("\n");
out.close();
nsWriter.write(((StringWriter) out).getBuffer().toString());
out = nsWriter;
nsWriter = null;
}
out.flush();
out = null;
}
//------------------------------------------------------------< private >---
/**
* write name
* @param ntd node type definition
* @throws IOException if an I/O error occurs
*/
private void writeName(NodeTypeDefinition ntd) throws IOException {
out.write(Lexer.BEGIN_NODE_TYPE_NAME);
writeJcrName(ntd.getName());
out.write(Lexer.END_NODE_TYPE_NAME);
}
/**
* Write the super type definitions.
*
* @param ntd node type definition
* @throws IOException if an I/O error occurs
*/
private void writeSupertypes(NodeTypeDefinition ntd) throws IOException {
// get ordered list of supertypes, omitting nt:base
TreeSet supertypes = new TreeSet();
for (String name : ntd.getDeclaredSupertypeNames()) {
if (!name.equals(JcrConstants.NT_BASE)) {
supertypes.add(name);
}
}
if (!supertypes.isEmpty()) {
String delim = " " + Lexer.EXTENDS + " ";
for (String name : supertypes) {
out.write(delim);
writeJcrName(name);
delim = ", ";
}
}
}
/**
* Write the options
*
* @param ntd node type definition
* @throws IOException if an I/O error occurs
*/
private void writeOptions(NodeTypeDefinition ntd) throws IOException {
List options = new LinkedList();
if (ntd.isAbstract()) {
options.add(Lexer.ABSTRACT[0]);
}
if (ntd.hasOrderableChildNodes()) {
options.add(Lexer.ORDERABLE[0]);
}
if (ntd.isMixin()) {
options.add(Lexer.MIXIN[0]);
}
if (!ntd.isQueryable()) {
options.add(Lexer.NOQUERY[0]);
}
String pin = ntd.getPrimaryItemName();
if (pin != null) {
options.add(Lexer.PRIMARYITEM[0]);
}
for (int i = 0; i < options.size(); i++) {
if (i == 0) {
out.write("\n" + INDENT);
} else {
out.write(" ");
}
out.write(options.get(i));
}
if (pin != null) {
out.write(" ");
writeJcrName(pin);
}
}
/**
* Write a property definition
*
* @param pd property definition
* @throws IOException if an I/O error occurs
*/
private void writePropDef(PropertyDefinition pd) throws IOException {
out.write("\n" + INDENT + Lexer.PROPERTY_DEFINITION + " ");
writeJcrName(pd.getName());
out.write(" ");
out.write(Lexer.BEGIN_TYPE);
out.write(PropertyType.nameFromValue(pd.getRequiredType()).toLowerCase());
out.write(Lexer.END_TYPE);
writeDefaultValues(pd.getDefaultValues());
if (pd.isMandatory()) {
out.write(" ");
out.write(Lexer.MANDATORY[0]);
}
if (pd.isAutoCreated()) {
out.write(" ");
out.write(Lexer.AUTOCREATED[0]);
}
if (pd.isProtected()) {
out.write(" ");
out.write(Lexer.PROTECTED[0]);
}
if (pd.isMultiple()) {
out.write(" ");
out.write(Lexer.MULTIPLE[0]);
}
if (pd.getOnParentVersion() != OnParentVersionAction.COPY) {
out.write(" ");
out.write(OnParentVersionAction.nameFromValue(pd.getOnParentVersion()).toLowerCase());
}
if (!pd.isFullTextSearchable()) {
out.write(" ");
out.write(Lexer.NOFULLTEXT[0]);
}
if (!pd.isQueryOrderable()) {
out.write(" ");
out.write(Lexer.NOQUERYORDER[0]);
}
String[] qops = pd.getAvailableQueryOperators();
if (qops != null && qops.length > 0) {
List opts = new ArrayList(Arrays.asList(qops));
List defaultOps = Arrays.asList(Operator.getAllQueryOperators());
if (!opts.containsAll(defaultOps)) {
out.write(" ");
out.write(Lexer.QUERYOPS[0]);
out.write(" '");
String delim = "";
for (String opt: opts) {
out.write(delim);
delim= ", ";
if (opt.equals(QueryObjectModelConstants.JCR_OPERATOR_EQUAL_TO)) {
out.write(Lexer.QUEROPS_EQUAL);
} else if (opt.equals(QueryObjectModelConstants.JCR_OPERATOR_NOT_EQUAL_TO)) {
out.write(Lexer.QUEROPS_NOTEQUAL);
} else if (opt.equals(QueryObjectModelConstants.JCR_OPERATOR_GREATER_THAN)) {
out.write(Lexer.QUEROPS_GREATERTHAN);
} else if (opt.equals(QueryObjectModelConstants.JCR_OPERATOR_GREATER_THAN_OR_EQUAL_TO)) {
out.write(Lexer.QUEROPS_GREATERTHANOREQUAL);
} else if (opt.equals(QueryObjectModelConstants.JCR_OPERATOR_LESS_THAN)) {
out.write(Lexer.QUEROPS_LESSTHAN);
} else if (opt.equals(QueryObjectModelConstants.JCR_OPERATOR_LESS_THAN_OR_EQUAL_TO)) {
out.write(Lexer.QUEROPS_LESSTHANOREQUAL);
} else if (opt.equals(QueryObjectModelConstants.JCR_OPERATOR_LIKE)) {
out.write(Lexer.QUEROPS_LIKE);
}
}
out.write("'");
}
}
writeValueConstraints(pd.getValueConstraints(), pd.getRequiredType());
}
/**
* Write default values
*
* @param dva default value
* @throws IOException if an I/O error occurs
*/
private void writeDefaultValues(Value[] dva) throws IOException {
if (dva != null && dva.length > 0) {
String delim = " = '";
for (Value value : dva) {
out.write(delim);
try {
out.write(escape(value.getString()));
} catch (RepositoryException e) {
out.write(escape(value.toString()));
}
out.write("'");
delim = ", '";
}
}
}
/**
* Write the value constraints
*
* @param constraints the value constraints
* @param type value type
* @throws IOException if an I/O error occurs
*/
private void writeValueConstraints(String[] constraints, int type) throws IOException {
if (constraints != null && constraints.length > 0) {
out.write(" ");
out.write(Lexer.CONSTRAINT);
out.write(" '");
out.write(escape(constraints[0]));
out.write("'");
for (int i = 1; i < constraints.length; i++) {
out.write(", '");
out.write(escape(constraints[i]));
out.write("'");
}
}
}
/**
* Write a child node definition
*
* @param nd node definition
* @throws IOException if an I/O error occurs
*/
private void writeNodeDef(NodeDefinition nd) throws IOException {
out.write("\n" + INDENT + Lexer.CHILD_NODE_DEFINITION + " ");
writeJcrName(nd.getName());
writeRequiredTypes(nd.getRequiredPrimaryTypeNames());
writeDefaultType(nd.getDefaultPrimaryTypeName());
if (nd.isMandatory()) {
out.write(" ");
out.write(Lexer.MANDATORY[0]);
}
if (nd.isAutoCreated()) {
out.write(" ");
out.write(Lexer.AUTOCREATED[0]);
}
if (nd.isProtected()) {
out.write(" ");
out.write(Lexer.PROTECTED[0]);
}
if (nd.allowsSameNameSiblings()) {
out.write(" ");
out.write(Lexer.MULTIPLE[0]);
}
if (nd.getOnParentVersion() != OnParentVersionAction.COPY) {
out.write(" ");
out.write(OnParentVersionAction.nameFromValue(nd.getOnParentVersion()).toLowerCase());
}
}
/**
* write required types
* @param reqTypes required type names
* @throws IOException if an I/O error occurs
*/
private void writeRequiredTypes(String[] reqTypes) throws IOException {
if (reqTypes != null && reqTypes.length > 0) {
String delim = " " + Lexer.BEGIN_TYPE;
for (String reqType : reqTypes) {
out.write(delim);
writeJcrName(reqType);
delim = ", ";
}
out.write(Lexer.END_TYPE);
}
}
/**
* write default types
* @param defType default type name
* @throws IOException if an I/O error occurs
*/
private void writeDefaultType(String defType) throws IOException {
if (defType != null && !defType.equals("*")) {
out.write(" = ");
writeJcrName(defType);
}
}
/**
* Write the name and updated the namespace declarations if needed.
*
* @param name name to write
* @throws IOException if an I/O error occurs
*/
private void writeJcrName(String name) throws IOException {
if (name == null) {
return;
}
String prefix = Text.getNamespacePrefix(name);
if (!prefix.equals(NamespaceRegistry.PREFIX_EMPTY)) {
// update namespace declaration
writeNamespaceDeclaration(prefix);
prefix += ":";
}
String localName = Text.getLocalName(name);
String encLocalName = (ANY.equals(localName)) ? ANY : ISO9075.encode(Text.getLocalName(name));
String resolvedName = prefix + encLocalName;
// check for '-' and '+'
boolean quotesNeeded = (name.indexOf('-') >= 0 || name.indexOf('+') >= 0);
if (quotesNeeded) {
out.write("'");
out.write(resolvedName);
out.write("'");
} else {
out.write(resolvedName);
}
}
/**
* escape
* @param s string
* @return the escaped string
*/
private String escape(String s) {
StringBuffer sb = new StringBuffer(s);
for (int i = 0; i < sb.length(); i++) {
if (sb.charAt(i) == '\\') {
sb.insert(i, '\\');
i++;
} else if (sb.charAt(i) == '\'') {
sb.insert(i, '\'');
i++;
}
}
return sb.toString();
}
/**
* Map namespace prefixes such as present in a qualified JCR name to
* the corresponding namespace URI.
*/
public interface NamespaceMapping {
String getNamespaceURI(String prefix);
}
/**
* Default implementation using Session to determine
* the namespace URI.
*/
private static class DefaultNamespaceMapping implements NamespaceMapping {
private final Session session;
private DefaultNamespaceMapping(Session session) {
this.session = session;
}
public String getNamespaceURI(String prefix) {
try {
return session.getNamespaceURI(prefix);
} catch (RepositoryException e) {
throw new RuntimeException(e);
}
}
}
}
