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DbStructureArgumentFormatter.java
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DbStructureArgumentFormatter.java
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/*
* Copyright (c) 2002-2017 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.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.impl.util.dbstructure;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import org.neo4j.helpers.Strings;
import org.neo4j.kernel.api.schema.NodePropertyDescriptor;
import org.neo4j.kernel.api.schema.RelationshipPropertyDescriptor;
import org.neo4j.kernel.api.constraints.NodePropertyExistenceConstraint;
import org.neo4j.kernel.api.constraints.RelationshipPropertyExistenceConstraint;
import org.neo4j.kernel.api.constraints.UniquenessConstraint;
import org.neo4j.kernel.api.schema.IndexDescriptor;
import org.neo4j.kernel.api.schema.IndexDescriptorFactory;
import static java.lang.String.format;
public enum DbStructureArgumentFormatter implements ArgumentFormatter
{
INSTANCE;
private static List<String> IMPORTS = Arrays.asList(
UniquenessConstraint.class.getCanonicalName(),
NodePropertyDescriptor.class.getCanonicalName(),
IndexDescriptorFactory.class.getCanonicalName(),
IndexDescriptor.class.getCanonicalName()
);
@Override
public Collection<String> imports()
{
return IMPORTS;
}
public void formatArgument( Appendable builder, Object arg ) throws IOException
{
if ( arg == null ) {
builder.append( "null" );
} else if ( arg instanceof String )
{
builder.append( '"' );
Strings.escape( builder, arg.toString() );
builder.append( '"' );
}
else if ( arg instanceof Long )
{
builder.append( arg.toString() );
builder.append( 'L' );
}
else if ( arg instanceof Integer )
{
builder.append( arg.toString() );
}
else if ( arg instanceof Double )
{
double d = (Double) arg;
if ( Double.isNaN( d ) )
{
builder.append( "Double.NaN" );
} else if ( Double.isInfinite( d ) ) {
builder.append( d < 0 ? "Double.NEGATIVE_INFINITY" : "Double.POSITIVE_INFINITY" );
} else
{
builder.append( arg.toString() );
builder.append( 'd' );
}
}
else if ( arg instanceof IndexDescriptor )
{
NodePropertyDescriptor descriptor = (NodePropertyDescriptor) arg;
int labelId = descriptor.getLabelId();
builder.append( format( "IndexDescriptorFactory.of( %s, %s )", labelId, descriptor.propertyIdText( ) ) );
}
else if ( arg instanceof NodePropertyDescriptor )
{
NodePropertyDescriptor descriptor = (NodePropertyDescriptor) arg;
int labelId = descriptor.getLabelId();
builder.append( format( "new NodePropertyDescriptor( %s, %s )", labelId, descriptor.propertyIdText( ) ) );
}
else if ( arg instanceof UniquenessConstraint )
{
UniquenessConstraint constraint = (UniquenessConstraint) arg;
int labelId = constraint.label();
builder.append( format( "new UniquenessConstraint( new NodePropertyDescriptor( %s, %s ) )", labelId, constraint.descriptor()
.propertyIdText( ) ) );
}
else if ( arg instanceof NodePropertyExistenceConstraint )
{
NodePropertyExistenceConstraint constraint = (NodePropertyExistenceConstraint) arg;
int labelId = constraint.label();
builder.append( format( "new NodePropertyExistenceConstraint( new NodePropertyDescriptor( %s, %s ) )", labelId, constraint.descriptor().propertyIdText( ) ) );
}
else if ( arg instanceof RelationshipPropertyExistenceConstraint )
{
RelationshipPropertyDescriptor descriptor = ((RelationshipPropertyExistenceConstraint) arg).descriptor();
int relTypeId = descriptor.getRelationshipTypeId();
int propertyKey = descriptor.getPropertyKeyId();
builder.append( format( "new RelationshipPropertyExistenceConstraint( new NodePropertyDescriptor( %s, %s ) )", relTypeId, propertyKey ) );
}
else
{
throw new IllegalArgumentException( format(
"Can't handle argument of type: %s with value: %s", arg.getClass(), arg
) );
}
}
}