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/*
* Copyright 2007-2019 Ping Identity Corporation
* All Rights Reserved.
*/
/*
* Copyright (C) 2008-2019 Ping Identity Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (GPLv2 only)
* or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
* as published by the Free Software Foundation.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*/
package com.unboundid.ldap.sdk.schema;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Map;
import java.util.LinkedHashMap;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.util.NotMutable;
import com.unboundid.util.StaticUtils;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import com.unboundid.util.Validator;
import static com.unboundid.ldap.sdk.schema.SchemaMessages.*;
/**
* This class provides a data structure that describes an LDAP attribute syntax
* schema element.
*/
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class AttributeSyntaxDefinition
extends SchemaElement
{
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = 8593718232711987488L;
// The set of extensions for this attribute syntax.
private final Map extensions;
// The description for this attribute syntax.
private final String description;
// The string representation of this attribute syntax.
private final String attributeSyntaxString;
// The OID for this attribute syntax.
private final String oid;
/**
* Creates a new attribute syntax from the provided string representation.
*
* @param s The string representation of the attribute syntax to create,
* using the syntax described in RFC 4512 section 4.1.5. It must
* not be {@code null}.
*
* @throws LDAPException If the provided string cannot be decoded as an
* attribute syntax definition.
*/
public AttributeSyntaxDefinition(final String s)
throws LDAPException
{
Validator.ensureNotNull(s);
attributeSyntaxString = s.trim();
// The first character must be an opening parenthesis.
final int length = attributeSyntaxString.length();
if (length == 0)
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ATTRSYNTAX_DECODE_EMPTY.get());
}
else if (attributeSyntaxString.charAt(0) != '(')
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ATTRSYNTAX_DECODE_NO_OPENING_PAREN.get(
attributeSyntaxString));
}
// Skip over any spaces until we reach the start of the OID, then read the
// OID until we find the next space.
int pos = skipSpaces(attributeSyntaxString, 1, length);
StringBuilder buffer = new StringBuilder();
pos = readOID(attributeSyntaxString, pos, length, buffer);
oid = buffer.toString();
// Technically, attribute syntax elements are supposed to appear in a
// specific order, but we'll be lenient and allow remaining elements to come
// in any order.
String descr = null;
final Map exts =
new LinkedHashMap<>(StaticUtils.computeMapCapacity(5));
while (true)
{
// Skip over any spaces until we find the next element.
pos = skipSpaces(attributeSyntaxString, pos, length);
// Read until we find the next space or the end of the string. Use that
// token to figure out what to do next.
final int tokenStartPos = pos;
while ((pos < length) && (attributeSyntaxString.charAt(pos) != ' '))
{
pos++;
}
final String token = attributeSyntaxString.substring(tokenStartPos, pos);
final String lowerToken = StaticUtils.toLowerCase(token);
if (lowerToken.equals(")"))
{
// This indicates that we're at the end of the value. There should not
// be any more closing characters.
if (pos < length)
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ATTRSYNTAX_DECODE_CLOSE_NOT_AT_END.get(
attributeSyntaxString));
}
break;
}
else if (lowerToken.equals("desc"))
{
if (descr == null)
{
pos = skipSpaces(attributeSyntaxString, pos, length);
buffer = new StringBuilder();
pos = readQDString(attributeSyntaxString, pos, length, buffer);
descr = buffer.toString();
}
else
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ATTRSYNTAX_DECODE_MULTIPLE_DESC.get(
attributeSyntaxString));
}
}
else if (lowerToken.startsWith("x-"))
{
pos = skipSpaces(attributeSyntaxString, pos, length);
final ArrayList valueList = new ArrayList<>(5);
pos = readQDStrings(attributeSyntaxString, pos, length, valueList);
final String[] values = new String[valueList.size()];
valueList.toArray(values);
if (exts.containsKey(token))
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ATTRSYNTAX_DECODE_DUP_EXT.get(
attributeSyntaxString, token));
}
exts.put(token, values);
}
else
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_ATTRSYNTAX_DECODE_UNEXPECTED_TOKEN.get(
attributeSyntaxString, token));
}
}
description = descr;
extensions = Collections.unmodifiableMap(exts);
}
/**
* Creates a new attribute syntax use with the provided information.
*
* @param oid The OID for this attribute syntax. It must not be
* {@code null}.
* @param description The description for this attribute syntax. It may be
* {@code null} if there is no description.
* @param extensions The set of extensions for this attribute syntax. It
* may be {@code null} or empty if there should not be
* any extensions.
*/
public AttributeSyntaxDefinition(final String oid, final String description,
final Map extensions)
{
Validator.ensureNotNull(oid);
this.oid = oid;
this.description = description;
if (extensions == null)
{
this.extensions = Collections.emptyMap();
}
else
{
this.extensions = Collections.unmodifiableMap(extensions);
}
final StringBuilder buffer = new StringBuilder();
createDefinitionString(buffer);
attributeSyntaxString = buffer.toString();
}
/**
* Constructs a string representation of this attribute syntax definition in
* the provided buffer.
*
* @param buffer The buffer in which to construct a string representation of
* this attribute syntax definition.
*/
private void createDefinitionString(final StringBuilder buffer)
{
buffer.append("( ");
buffer.append(oid);
if (description != null)
{
buffer.append(" DESC '");
encodeValue(description, buffer);
buffer.append('\'');
}
for (final Map.Entry e : extensions.entrySet())
{
final String name = e.getKey();
final String[] values = e.getValue();
if (values.length == 1)
{
buffer.append(' ');
buffer.append(name);
buffer.append(" '");
encodeValue(values[0], buffer);
buffer.append('\'');
}
else
{
buffer.append(' ');
buffer.append(name);
buffer.append(" (");
for (final String value : values)
{
buffer.append(" '");
encodeValue(value, buffer);
buffer.append('\'');
}
buffer.append(" )");
}
}
buffer.append(" )");
}
/**
* Retrieves the OID for this attribute syntax.
*
* @return The OID for this attribute syntax.
*/
public String getOID()
{
return oid;
}
/**
* Retrieves the description for this attribute syntax, if available.
*
* @return The description for this attribute syntax, or {@code null} if
* there is no description defined.
*/
public String getDescription()
{
return description;
}
/**
* Retrieves the set of extensions for this matching rule use. They will be
* mapped from the extension name (which should start with "X-") to the set
* of values for that extension.
*
* @return The set of extensions for this matching rule use.
*/
public Map getExtensions()
{
return extensions;
}
/**
* {@inheritDoc}
*/
@Override()
public int hashCode()
{
return oid.hashCode();
}
/**
* {@inheritDoc}
*/
@Override()
public boolean equals(final Object o)
{
if (o == null)
{
return false;
}
if (o == this)
{
return true;
}
if (! (o instanceof AttributeSyntaxDefinition))
{
return false;
}
final AttributeSyntaxDefinition d = (AttributeSyntaxDefinition) o;
return (oid.equals(d.oid) &&
StaticUtils.bothNullOrEqualIgnoreCase(description, d.description) &&
extensionsEqual(extensions, d.extensions));
}
/**
* Retrieves a string representation of this attribute syntax, in the format
* described in RFC 4512 section 4.1.5.
*
* @return A string representation of this attribute syntax definition.
*/
@Override()
public String toString()
{
return attributeSyntaxString;
}
}
