/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2009 Sun Microsystems, Inc.
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*/
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package org.opends.sdk.schema;
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import static com.sun.opends.sdk.messages.Messages.*;
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import static com.sun.opends.sdk.util.StringPrepProfile.*;
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import static org.opends.sdk.schema.SchemaConstants.*;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import org.opends.sdk.ByteSequence;
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import org.opends.sdk.ByteString;
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import com.sun.opends.sdk.util.Message;
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import com.sun.opends.sdk.util.MessageBuilder;
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import com.sun.opends.sdk.util.Validator;
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/**
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* This class provides an enumeration-based mechanism where a new syntax
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* and its corresponding matching rules can be created on-the-fly. An
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* enum syntax is an LDAPSyntaxDescriptionSyntax with X-ENUM extension.
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*/
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final class EnumSyntaxImpl extends AbstractSyntaxImpl
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{
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private final String oid;
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// Set of read-only enum entries.
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private final List<String> entries;
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EnumSyntaxImpl(String oid, List<String> entries)
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{
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Validator.ensureNotNull(oid, entries);
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this.oid = oid;
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final List<String> entryStrings =
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new ArrayList<String>(entries.size());
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for (final String entry : entries)
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{
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final String normalized = normalize(ByteString.valueOf(entry));
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if (!entryStrings.contains(normalized))
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{
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entryStrings.add(normalized);
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}
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}
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this.entries = Collections.unmodifiableList(entryStrings);
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}
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@Override
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public String getApproximateMatchingRule()
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{
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return AMR_DOUBLE_METAPHONE_OID;
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}
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public Iterable<String> getEntries()
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{
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return entries;
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}
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@Override
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public String getEqualityMatchingRule()
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{
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return EMR_CASE_IGNORE_OID;
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}
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public String getName()
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{
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return oid;
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}
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@Override
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public String getOrderingMatchingRule()
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{
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return OMR_OID_GENERIC_ENUM + "." + oid;
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}
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@Override
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public String getSubstringMatchingRule()
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{
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return SMR_CASE_IGNORE_OID;
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}
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public int indexOf(ByteSequence value)
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{
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return entries.indexOf(normalize(value));
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}
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public boolean isHumanReadable()
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{
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return true;
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}
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public boolean valueIsAcceptable(Schema schema, ByteSequence value,
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MessageBuilder invalidReason)
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{
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// The value is acceptable if it belongs to the set.
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final boolean isAllowed = entries.contains(normalize(value));
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if (!isAllowed)
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{
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final Message message =
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WARN_ATTR_SYNTAX_LDAPSYNTAX_ENUM_INVALID_VALUE.get(value
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.toString(), oid);
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invalidReason.append(message);
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}
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return isAllowed;
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}
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private String normalize(ByteSequence value)
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{
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final StringBuilder buffer = new StringBuilder();
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prepareUnicode(buffer, value, TRIM, CASE_FOLD);
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final int bufferLength = buffer.length();
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if (bufferLength == 0)
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{
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if (value.length() > 0)
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{
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// This should only happen if the value is composed entirely of
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// spaces. In that case, the normalized value is a single space.
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return " ";
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}
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else
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{
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// The value is empty, so it is already normalized.
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return "";
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}
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}
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// Replace any consecutive spaces with a single space.
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for (int pos = bufferLength - 1; pos > 0; pos--)
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{
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if (buffer.charAt(pos) == ' ')
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{
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if (buffer.charAt(pos - 1) == ' ')
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{
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buffer.delete(pos, pos + 1);
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}
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}
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}
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return buffer.toString();
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}
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}
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