| /* |
| * 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.directory.api.ldap.model.entry; |
| |
| |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.util.Arrays; |
| import java.util.Comparator; |
| |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.apache.directory.api.ldap.model.exception.LdapInvalidAttributeValueException; |
| import org.apache.directory.api.ldap.model.schema.AttributeType; |
| import org.apache.directory.api.ldap.model.schema.LdapComparator; |
| import org.apache.directory.api.ldap.model.schema.MatchingRule; |
| import org.apache.directory.api.ldap.model.schema.Normalizer; |
| import org.apache.directory.api.ldap.model.schema.comparators.ByteArrayComparator; |
| import org.apache.directory.api.util.Strings; |
| |
| |
| /** |
| * A server side schema aware wrapper around a binary attribute value. |
| * This value wrapper uses schema information to syntax check values, |
| * and to compare them for equality and ordering. It caches results |
| * and invalidates them when the user provided value changes. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class BinaryValue extends AbstractValue<byte[]> |
| { |
| /** Used for serialization */ |
| public static final long serialVersionUID = 2L; |
| |
| |
| /** |
| * Creates a BinaryValue without an initial user provided value. |
| * |
| * @param attributeType the schema type associated with this BinaryValue |
| */ |
| /* No protection */BinaryValue( AttributeType attributeType ) |
| { |
| if ( attributeType != null ) |
| { |
| // We must have a Syntax |
| if ( attributeType.getSyntax() == null ) |
| { |
| throw new IllegalArgumentException( I18n.err( I18n.ERR_04445 ) ); |
| } |
| |
| if ( attributeType.getSyntax().isHumanReadable() ) |
| { |
| LOG.warn( "Treating a value of a human readible attribute {} as binary: ", attributeType.getName() ); |
| } |
| |
| this.attributeType = attributeType; |
| } |
| } |
| |
| |
| /** |
| * Creates a BinaryValue with an initial user provided binary value. |
| * |
| * @param value the binary value to wrap which may be null, or a zero length byte array |
| */ |
| public BinaryValue( byte[] value ) |
| { |
| if ( value != null ) |
| { |
| this.upValue = new byte[value.length]; |
| this.normalizedValue = new byte[value.length]; |
| System.arraycopy( value, 0, this.upValue, 0, value.length ); |
| System.arraycopy( value, 0, this.normalizedValue, 0, value.length ); |
| } |
| else |
| { |
| this.upValue = null; |
| this.normalizedValue = null; |
| } |
| } |
| |
| |
| /** |
| * Creates a BinaryValue with an initial user provided binary value. |
| * |
| * @param attributeType the schema type associated with this BinaryValue |
| * @param value the binary value to wrap which may be null, or a zero length byte array |
| * @throws LdapInvalidAttributeValueException If the added value is invalid accordingly |
| * to the schema |
| */ |
| public BinaryValue( AttributeType attributeType, byte[] value ) throws LdapInvalidAttributeValueException |
| { |
| this( value ); |
| apply( attributeType ); |
| } |
| |
| |
| /** |
| * Gets a direct reference to the normalized representation for the |
| * user provided value of this ServerValue wrapper. Implementations will most |
| * likely leverage the attributeType this value is associated with to |
| * determine how to properly normalize the user provided value. |
| * |
| * @return the normalized version of the user provided value |
| */ |
| public byte[] getNormValue() |
| { |
| if ( isNull() ) |
| { |
| return null; |
| } |
| |
| byte[] copy = new byte[normalizedValue.length]; |
| System.arraycopy( normalizedValue, 0, copy, 0, normalizedValue.length ); |
| return copy; |
| } |
| |
| |
| /** |
| * |
| * @see ServerValue#compareTo(Value) |
| */ |
| public int compareTo( Value<byte[]> value ) |
| { |
| if ( isNull() ) |
| { |
| if ( ( value == null ) || value.isNull() ) |
| { |
| return 0; |
| } |
| else |
| { |
| return -1; |
| } |
| } |
| else |
| { |
| if ( ( value == null ) || value.isNull() ) |
| { |
| return 1; |
| } |
| } |
| |
| BinaryValue binaryValue = ( BinaryValue ) value; |
| |
| if ( attributeType != null ) |
| { |
| try |
| { |
| LdapComparator<byte[]> comparator = getLdapComparator(); |
| |
| if ( comparator != null ) |
| { |
| return comparator |
| .compare( getNormReference(), binaryValue.getNormReference() ); |
| } |
| else |
| { |
| return new ByteArrayComparator( null ).compare( getNormReference(), binaryValue |
| .getNormReference() ); |
| } |
| } |
| catch ( LdapException e ) |
| { |
| String msg = I18n.err( I18n.ERR_04443, Arrays.toString( getReference() ), value ); |
| LOG.error( msg, e ); |
| throw new IllegalStateException( msg, e ); |
| } |
| } |
| else |
| { |
| return new ByteArrayComparator( null ).compare( getNormValue(), binaryValue.getNormValue() ); |
| } |
| } |
| |
| |
| // ----------------------------------------------------------------------- |
| // Object Methods |
| // ----------------------------------------------------------------------- |
| /** |
| * @see Object#hashCode() |
| * @return the instance's hashcode |
| */ |
| public int hashCode() |
| { |
| if ( h == 0 ) |
| { |
| // return zero if the value is null so only one null value can be |
| // stored in an attribute - the string version does the same |
| if ( isNull() ) |
| { |
| return 0; |
| } |
| |
| byte[] normalizedValue = getNormReference(); |
| h = Arrays.hashCode( normalizedValue ); |
| } |
| |
| return h; |
| } |
| |
| |
| /** |
| * Checks to see if this BinaryValue equals the supplied object. |
| * |
| * This equals implementation overrides the BinaryValue implementation which |
| * is not schema aware. |
| */ |
| public boolean equals( Object obj ) |
| { |
| if ( this == obj ) |
| { |
| return true; |
| } |
| |
| if ( !( obj instanceof BinaryValue ) ) |
| { |
| return false; |
| } |
| |
| BinaryValue other = ( BinaryValue ) obj; |
| |
| // First check if we have an attrbuteType. |
| if ( attributeType != null ) |
| { |
| // yes : check for the other value |
| if ( other.attributeType != null ) |
| { |
| if ( attributeType.getOid().equals( other.getAttributeType().getOid() ) ) |
| { |
| // Both AttributeType have the same OID, we can assume they are |
| // equals. We don't check any further, because the unicity of OID |
| // makes it unlikely that the two AT are different. |
| // The values may be both null |
| if ( isNull() ) |
| { |
| return other.isNull(); |
| } |
| |
| // Shortcut : if we have an AT for both the values, check the |
| // already normalized values |
| if ( Arrays.equals( upValue, other.upValue ) ) |
| { |
| return true; |
| } |
| |
| // We have an AttributeType, we use the associated comparator |
| try |
| { |
| Comparator<byte[]> comparator = getLdapComparator(); |
| |
| // Compare normalized values |
| if ( comparator == null ) |
| { |
| return Arrays.equals( getNormReference(), other.getNormReference() ); |
| } |
| else |
| { |
| return comparator.compare( getNormReference(), other.getNormReference() ) == 0; |
| } |
| } |
| catch ( LdapException ne ) |
| { |
| return false; |
| } |
| } |
| else |
| { |
| // We can't compare two values when the two ATs are different |
| return false; |
| } |
| } |
| else |
| { |
| // We only have one AT : we will assume that both values are for the |
| // same AT. |
| // The values may be both null |
| if ( isNull() ) |
| { |
| return other.isNull(); |
| } |
| |
| // We have an AttributeType on the base value, we need to use its comparator |
| try |
| { |
| Comparator<byte[]> comparator = getLdapComparator(); |
| |
| // Compare normalized values. We have to normalized the other value, |
| // as it has no AT |
| MatchingRule equality = getAttributeType().getEquality(); |
| |
| if ( equality == null ) |
| { |
| // No matching rule : compare the raw values |
| return Arrays.equals( getNormReference(), other.getNormReference() ); |
| } |
| |
| Normalizer normalizer = equality.getNormalizer(); |
| |
| BinaryValue otherValue = ( BinaryValue ) normalizer.normalize( other ); |
| |
| if ( comparator == null ) |
| { |
| return Arrays.equals( getNormReference(), otherValue.getNormReference() ); |
| } |
| else |
| { |
| return comparator.compare( getNormReference(), otherValue.getNormReference() ) == 0; |
| } |
| } |
| catch ( LdapException ne ) |
| { |
| return false; |
| } |
| } |
| } |
| else |
| { |
| // No : check for the other value |
| if ( other.attributeType != null ) |
| { |
| // We only have one AT : we will assume that both values are for the |
| // same AT. |
| // The values may be both null |
| if ( isNull() ) |
| { |
| return other.isNull(); |
| } |
| |
| try |
| { |
| Comparator<byte[]> comparator = other.getLdapComparator(); |
| |
| // Compare normalized values. We have to normalized the other value, |
| // as it has no AT |
| MatchingRule equality = other.getAttributeType().getEquality(); |
| |
| if ( equality == null ) |
| { |
| // No matching rule : compare the raw values |
| return Arrays.equals( getNormReference(), other.getNormReference() ); |
| } |
| |
| Normalizer normalizer = equality.getNormalizer(); |
| |
| BinaryValue thisValue = ( BinaryValue ) normalizer.normalize( this ); |
| |
| if ( comparator == null ) |
| { |
| return Arrays.equals( thisValue.getNormReference(), other.getNormReference() ); |
| } |
| else |
| { |
| return comparator.compare( thisValue.getNormReference(), other.getNormReference() ) == 0; |
| } |
| } |
| catch ( LdapException ne ) |
| { |
| return false; |
| } |
| } |
| else |
| { |
| // The values may be both null |
| if ( isNull() ) |
| { |
| return other.isNull(); |
| } |
| |
| // Now check the normalized values |
| return Arrays.equals( getNormReference(), other.getNormReference() ); |
| } |
| } |
| } |
| |
| |
| // ----------------------------------------------------------------------- |
| // Cloneable methods |
| // ----------------------------------------------------------------------- |
| /** |
| * {@inheritDoc} |
| */ |
| public BinaryValue clone() |
| { |
| BinaryValue clone = ( BinaryValue ) super.clone(); |
| |
| // We have to copy the byte[], they are just referenced by suoer.clone() |
| if ( normalizedValue != null ) |
| { |
| clone.normalizedValue = new byte[normalizedValue.length]; |
| System.arraycopy( normalizedValue, 0, clone.normalizedValue, 0, normalizedValue.length ); |
| } |
| |
| if ( upValue != null ) |
| { |
| clone.upValue = new byte[upValue.length]; |
| System.arraycopy( upValue, 0, clone.upValue, 0, upValue.length ); |
| } |
| |
| return clone; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public byte[] getValue() |
| { |
| if ( upValue == null ) |
| { |
| return null; |
| } |
| |
| final byte[] copy = new byte[upValue.length]; |
| System.arraycopy( upValue, 0, copy, 0, upValue.length ); |
| |
| return copy; |
| } |
| |
| |
| /** |
| * Tells if the current value is Human Readable |
| * |
| * @return <code>true</code> if the value is HR, <code>false</code> otherwise |
| */ |
| public boolean isHumanReadable() |
| { |
| return false; |
| } |
| |
| |
| /** |
| * @return The length of the interned value |
| */ |
| public int length() |
| { |
| return upValue != null ? upValue.length : 0; |
| } |
| |
| |
| /** |
| * Get the user provided value as a byte[]. This method returns a copy of |
| * the user provided byte[]. |
| * |
| * @return the user provided value as a byte[] |
| */ |
| public byte[] getBytes() |
| { |
| return getValue(); |
| } |
| |
| |
| /** |
| * Get the user provided value as a String. |
| * |
| * @return the user provided value as a String |
| */ |
| public String getString() |
| { |
| return Strings.utf8ToString( upValue ); |
| } |
| |
| |
| /** |
| * Deserialize a BinaryValue. It will return a new BinaryValue instance. |
| * |
| * @param attributeType The AttributeType associated with the Value. Can be null |
| * @param in The input stream |
| * @return A new StringValue instance |
| * @throws IOException If the stream can't be read |
| * @throws ClassNotFoundException If we can't instanciate a BinaryValue |
| */ |
| public static BinaryValue deserialize( ObjectInput in ) throws IOException, ClassNotFoundException |
| { |
| BinaryValue value = new BinaryValue( ( AttributeType ) null ); |
| value.readExternal( in ); |
| |
| return value; |
| } |
| |
| |
| /** |
| * Deserialize a schema aware BinaryValue. It will return a new BinaryValue instance. |
| * |
| * @param attributeType The AttributeType associated with the Value. Can be null |
| * @param in The input stream |
| * @return A new StringValue instance |
| * @throws IOException If the stream can't be read |
| * @throws ClassNotFoundException If we can't instanciate a BinaryValue |
| */ |
| public static BinaryValue deserialize( AttributeType attributeType, ObjectInput in ) throws IOException, |
| ClassNotFoundException |
| { |
| BinaryValue value = new BinaryValue( attributeType ); |
| value.readExternal( in ); |
| |
| return value; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void readExternal( ObjectInput in ) throws IOException, ClassNotFoundException |
| { |
| // Read the BINARY flag |
| boolean isHR = in.readBoolean(); |
| |
| if ( isHR ) |
| { |
| throw new IOException( "The serialized value is not a Binary value" ); |
| } |
| // Read the user provided value, if it's not null |
| int upLength = in.readInt(); |
| |
| if ( upLength >= 0 ) |
| { |
| upValue = new byte[upLength]; |
| |
| in.readFully( upValue ); |
| } |
| |
| // Read the isNormalized flag |
| boolean normalized = in.readBoolean(); |
| |
| if ( normalized ) |
| { |
| int normalizedLength = in.readInt(); |
| |
| if ( normalizedLength >= 0 ) |
| { |
| normalizedValue = new byte[normalizedLength]; |
| |
| in.readFully( normalizedValue ); |
| } |
| } |
| else |
| { |
| if ( attributeType != null ) |
| { |
| try |
| { |
| normalizedValue = attributeType.getEquality().getNormalizer().normalize( this ).getBytes(); |
| MatchingRule equality = attributeType.getEquality(); |
| |
| if ( equality == null ) |
| { |
| if ( upLength >= 0 ) |
| { |
| normalizedValue = new byte[upLength]; |
| |
| System.arraycopy( upValue, 0, normalizedValue, 0, upLength ); |
| } |
| } |
| else |
| { |
| Normalizer normalizer = equality.getNormalizer(); |
| |
| if ( normalizer != null ) |
| { |
| normalizedValue = normalizer.normalize( this ).getBytes(); |
| } |
| else |
| { |
| if ( upLength >= 0 ) |
| { |
| normalizedValue = new byte[upLength]; |
| |
| System.arraycopy( upValue, 0, normalizedValue, 0, upLength ); |
| } |
| } |
| } |
| } |
| catch ( LdapException le ) |
| { |
| // Copy the upValue into the normalizedValue |
| if ( upLength >= 0 ) |
| { |
| normalizedValue = new byte[upLength]; |
| |
| System.arraycopy( upValue, 0, normalizedValue, 0, upLength ); |
| } |
| } |
| } |
| else |
| { |
| // Copy the upValue into the normalizedValue |
| if ( upLength >= 0 ) |
| { |
| normalizedValue = new byte[upLength]; |
| |
| System.arraycopy( upValue, 0, normalizedValue, 0, upLength ); |
| } |
| } |
| } |
| |
| // The hashCoe |
| h = in.readInt(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void writeExternal( ObjectOutput out ) throws IOException |
| { |
| // Write the BINARY flag |
| out.writeBoolean( BINARY ); |
| |
| // Write the user provided value, if it's not null |
| if ( upValue != null ) |
| { |
| out.writeInt( upValue.length ); |
| |
| if ( upValue.length > 0 ) |
| { |
| out.write( upValue, 0, upValue.length ); |
| } |
| } |
| else |
| { |
| out.writeInt( -1 ); |
| } |
| |
| // Write the isNormalized flag |
| if ( attributeType != null ) |
| { |
| out.writeBoolean( true ); |
| |
| // Write the normalized value, if not null |
| if ( normalizedValue != null ) |
| { |
| out.writeInt( normalizedValue.length ); |
| |
| if ( normalizedValue.length > 0 ) |
| { |
| out.write( normalizedValue, 0, normalizedValue.length ); |
| } |
| } |
| else |
| { |
| out.writeInt( -1 ); |
| } |
| } |
| else |
| { |
| out.writeBoolean( false ); |
| } |
| |
| // The hashCode |
| out.writeInt( h ); |
| |
| out.flush(); |
| } |
| |
| |
| /** |
| * Dumps binary in hex with label. |
| * |
| * @see Object#toString() |
| */ |
| public String toString() |
| { |
| if ( upValue == null ) |
| { |
| return "null"; |
| } |
| else if ( upValue.length > 16 ) |
| { |
| // Just dump the first 16 bytes... |
| byte[] copy = new byte[16]; |
| |
| System.arraycopy( upValue, 0, copy, 0, 16 ); |
| |
| return Strings.dumpBytes( copy ) + "..."; |
| } |
| else |
| { |
| return Strings.dumpBytes( upValue ); |
| } |
| } |
| } |