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ConstraintDescriptor subclasses for increased type safety
- Pushed final boundary in ConstrainSemantics - Fixed some trailing TODOs
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51 changes: 51 additions & 0 deletions
51
...in/java/org/neo4j/kernel/api/schema_new/constaints/NodeExistenceConstraintDescriptor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| /* | ||
| * 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.api.schema_new.constaints; | ||
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| import org.neo4j.kernel.api.TokenNameLookup; | ||
| import org.neo4j.kernel.api.schema_new.LabelSchemaDescriptor; | ||
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| public class NodeExistenceConstraintDescriptor extends ConstraintDescriptor | ||
| { | ||
| private LabelSchemaDescriptor schema; | ||
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| NodeExistenceConstraintDescriptor( LabelSchemaDescriptor schema ) | ||
| { | ||
| super( Type.EXISTS ); | ||
| this.schema = schema; | ||
| } | ||
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| @Override | ||
| public LabelSchemaDescriptor schema() | ||
| { | ||
| return schema; | ||
| } | ||
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| @Override | ||
| public String prettyPrint( TokenNameLookup tokenNameLookup ) | ||
| { | ||
| String labelName = escapeLabelOrRelTyp( tokenNameLookup.labelGetName( schema.getLabelId() ) ); | ||
| String nodeName = labelName.toLowerCase(); | ||
| String propertyName = tokenNameLookup.propertyKeyGetName( schema.getPropertyId() ); | ||
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| return String.format( "CONSTRAINT ON ( %s:%s ) ASSERT exists(%s.%s)", | ||
| nodeName, labelName, nodeName, propertyName ); | ||
| } | ||
| } |
51 changes: 51 additions & 0 deletions
51
...ain/java/org/neo4j/kernel/api/schema_new/constaints/RelExistenceConstraintDescriptor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| /* | ||
| * 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.api.schema_new.constaints; | ||
|
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| import org.neo4j.kernel.api.TokenNameLookup; | ||
| import org.neo4j.kernel.api.schema_new.RelationTypeSchemaDescriptor; | ||
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| public class RelExistenceConstraintDescriptor extends ConstraintDescriptor | ||
| { | ||
| private final RelationTypeSchemaDescriptor schema; | ||
|
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| RelExistenceConstraintDescriptor( RelationTypeSchemaDescriptor schema ) | ||
| { | ||
| super( Type.EXISTS ); | ||
| this.schema = schema; | ||
| } | ||
|
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| @Override | ||
| public RelationTypeSchemaDescriptor schema() | ||
| { | ||
| return schema; | ||
| } | ||
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| @Override | ||
| public String prettyPrint( TokenNameLookup tokenNameLookup ) | ||
| { | ||
| String typeName = escapeLabelOrRelTyp( tokenNameLookup.relationshipTypeGetName( schema.getRelTypeId() ) ); | ||
| String relName = typeName.toLowerCase(); | ||
| String propertyName = tokenNameLookup.propertyKeyGetName( schema.getPropertyId() ); | ||
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| return String.format( "CONSTRAINT ON ()-[ %s:%s ]-() ASSERT exists(%s.%s)", | ||
| relName, typeName, relName, propertyName ); | ||
| } | ||
| } |
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