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IndexEntryConflictException.java
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IndexEntryConflictException.java
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/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.api.exceptions.index;
import org.neo4j.internal.kernel.api.TokenNameLookup;
import org.neo4j.internal.kernel.api.exceptions.KernelException;
import org.neo4j.internal.kernel.api.schema.SchemaDescriptor;
import org.neo4j.internal.kernel.api.schema.SchemaUtil;
import org.neo4j.kernel.api.schema.index.IndexDescriptor;
import org.neo4j.values.storable.Value;
import org.neo4j.values.storable.ValueTuple;
import static java.lang.String.format;
import static org.neo4j.kernel.api.StatementConstants.NO_SUCH_NODE;
/**
* TODO why isn't this a {@link KernelException}?
*/
public class IndexEntryConflictException extends Exception
{
private final ValueTuple propertyValues;
private final long addedNodeId;
private final long existingNodeId;
/**
* Make IOUtils happy
*/
public IndexEntryConflictException( String message, Throwable cause )
{
super( message, cause );
propertyValues = null;
addedNodeId = -1;
existingNodeId = -1;
}
public IndexEntryConflictException( long existingNodeId, long addedNodeId, Value... propertyValue )
{
this( existingNodeId, addedNodeId, ValueTuple.of( propertyValue ) );
}
public IndexEntryConflictException( long existingNodeId, long addedNodeId, ValueTuple propertyValues )
{
super( format( "Both node %d and node %d share the property value %s",
existingNodeId, addedNodeId, propertyValues ) );
this.existingNodeId = existingNodeId;
this.addedNodeId = addedNodeId;
this.propertyValues = propertyValues;
}
/**
* Use this method in cases where {@link org.neo4j.kernel.api.exceptions.index.IndexEntryConflictException}
* was caught but it should not have been allowed to be thrown in the first place.
* Typically where the index we performed an operation on is not a unique index.
*/
public RuntimeException notAllowed( IndexDescriptor descriptor )
{
return new IllegalStateException( String.format(
"Index for (%s) should not require unique values.",
descriptor.userDescription( SchemaUtil.idTokenNameLookup ) ), this );
}
public String evidenceMessage( TokenNameLookup tokenNameLookup, SchemaDescriptor schema )
{
assert schema.getPropertyIds().length == propertyValues.size();
String labelName = tokenNameLookup.labelGetName( schema.keyId() );
if ( addedNodeId == NO_SUCH_NODE )
{
return format( "Node(%d) already exists with label `%s` and %s",
existingNodeId, labelName, propertyString( tokenNameLookup, schema.getPropertyIds() ) );
}
else
{
return format( "Both Node(%d) and Node(%d) have the label `%s` and %s",
existingNodeId, addedNodeId, labelName, propertyString( tokenNameLookup, schema.getPropertyIds() ) );
}
}
public ValueTuple getPropertyValues()
{
return propertyValues;
}
public Value getSinglePropertyValue()
{
return propertyValues.getOnlyValue();
}
public long getAddedNodeId()
{
return addedNodeId;
}
public long getExistingNodeId()
{
return existingNodeId;
}
@Override
public boolean equals( Object o )
{
if ( this == o )
{
return true;
}
if ( o == null || getClass() != o.getClass() )
{
return false;
}
IndexEntryConflictException that = (IndexEntryConflictException) o;
return addedNodeId == that.addedNodeId &&
existingNodeId == that.existingNodeId &&
!(propertyValues != null ? !propertyValues.equals( that.propertyValues ) : that.propertyValues != null);
}
@Override
public int hashCode()
{
int result = propertyValues != null ? propertyValues.hashCode() : 0;
result = 31 * result + (int) (addedNodeId ^ (addedNodeId >>> 32));
result = 31 * result + (int) (existingNodeId ^ (existingNodeId >>> 32));
return result;
}
@Override
public String toString()
{
return "IndexEntryConflictException{" +
"propertyValues=" + propertyValues +
", addedNodeId=" + addedNodeId +
", existingNodeId=" + existingNodeId +
'}';
}
private String propertyString( TokenNameLookup tokenNameLookup, int[] propertyIds )
{
StringBuilder sb = new StringBuilder();
String sep = propertyIds.length > 1 ? "properties " : "property ";
for ( int i = 0; i < propertyIds.length; i++ )
{
sb.append( sep );
sep = ", ";
sb.append( '`' );
sb.append( tokenNameLookup.propertyKeyGetName( propertyIds[i] ) );
sb.append( "` = " );
sb.append( propertyValues.valueAt( i ).prettyPrint() );
}
return sb.toString();
}
}