diff options
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/context/MappingTools.java')
-rw-r--r-- | jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/context/MappingTools.java | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/context/MappingTools.java b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/context/MappingTools.java deleted file mode 100644 index c19f5e3e63..0000000000 --- a/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/context/MappingTools.java +++ /dev/null @@ -1,163 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2006, 2008 Oracle. All rights reserved. - * This program and the accompanying materials are made available under the terms of - * the Eclipse Public License v1.0, which accompanies this distribution and is available at - * http://www.eclipse.org/legal/epl-v10.html. - * - * Contributors: - * Oracle - initial API and implementation - ******************************************************************************/ -package org.eclipse.jpt.core.internal.context; - -import java.util.Iterator; -import java.util.StringTokenizer; -import org.eclipse.jpt.core.MappingKeys; -import org.eclipse.jpt.core.context.ColumnMapping; -import org.eclipse.jpt.core.context.Embeddable; -import org.eclipse.jpt.core.context.Entity; -import org.eclipse.jpt.core.context.JoinColumn; -import org.eclipse.jpt.core.context.PersistentAttribute; -import org.eclipse.jpt.core.context.PersistentType; -import org.eclipse.jpt.core.context.RelationshipMapping; -import org.eclipse.jpt.core.context.java.JavaPersistentAttribute; - -public class MappingTools -{ - public static boolean targetEntityIsValid(String targetEntity) { - if (targetEntity == null) { - return true; - } - // balance is # of name tokens - # of period tokens seen so far - // initially 0; finally 1; should never drop < 0 or > 1 - int balance = 0; - for (StringTokenizer t = new StringTokenizer(targetEntity, ".", true); t.hasMoreTokens();) { - String s = t.nextToken(); - if (s.indexOf('.') >= 0) { - // this is a delimiter - if (s.length() > 1) { - // too many periods in a row - return false; - } - balance--; - if (balance < 0) { - return false; - } - } else { - // this is an identifier segment - balance++; - } - } - return (balance == 1); - } - - /** - * Default join table name from the JPA spec: - * The concatenated names of the two associated primary - * entity tables, separated by a underscore. - * - * [owning table name]_[target table name] - */ - public static String buildJoinTableDefaultName(RelationshipMapping relationshipMapping) { - if (!relationshipMapping.isRelationshipOwner()) { - return null; - } - String owningTableName = relationshipMapping.getTypeMapping().getTableName(); - if (owningTableName == null) { - return null; - } - Entity targetEntity = relationshipMapping.getResolvedTargetEntity(); - if (targetEntity == null) { - return null; - } - String targetTableName = targetEntity.getTableName(); - if (targetTableName == null) { - return null; - } - return owningTableName + "_" + targetTableName; - } - - /** - * return the join column's default name; - * which is typically <attribute name>_<referenced column name> - * but, if we don't have an attribute name (e.g. in a unidirectional - * OneToMany or ManyToMany) is - * <target entity name>_<referenced column name> - */ - // <attribute name>_<referenced column name> - // or - // <target entity name>_<referenced column name> - public static String buildJoinColumnDefaultName(JoinColumn joinColumn) { - if (joinColumn.getOwner().joinColumnsSize() != 1) { - return null; - } - String prefix = joinColumn.getOwner().getAttributeName(); - if (prefix == null) { - prefix = targetEntityName(joinColumn); - } - if (prefix == null) { - return null; - } - // TODO not sure which of these is correct... - // (the spec implies that the referenced column is always the - // primary key column of the target entity) - // String targetColumn = this.targetPrimaryKeyColumnName(); - String targetColumn = joinColumn.getReferencedColumnName(); - if (targetColumn == null) { - return null; - } - return prefix + "_" + targetColumn; - } - - /** - * return the name of the target entity - */ - protected static String targetEntityName(JoinColumn joinColumn) { - Entity targetEntity = joinColumn.getOwner().getTargetEntity(); - return (targetEntity == null) ? null : targetEntity.getName(); - } - - public static String buildJoinColumnDefaultReferencedColumnName(JoinColumn joinColumn) { - if (joinColumn.getOwner().joinColumnsSize() != 1) { - return null; - } - return targetPrimaryKeyColumnName(joinColumn); - } - - /** - * return the name of the single primary key column of the target entity - */ - protected static String targetPrimaryKeyColumnName(JoinColumn joinColumn) { - Entity targetEntity = joinColumn.getOwner().getTargetEntity(); - return (targetEntity == null) ? null : targetEntity.getPrimaryKeyColumnName(); - } - - - public static Embeddable getEmbeddableFor(JavaPersistentAttribute persistentAttribute) { - String qualifiedTypeName = persistentAttribute.getResourcePersistentAttribute().getQualifiedTypeName(); - if (qualifiedTypeName == null) { - return null; - } - PersistentType persistentType = persistentAttribute.getPersistenceUnit().getPersistentType(qualifiedTypeName); - if (persistentType != null) { - if (persistentType.getMappingKey() == MappingKeys.EMBEDDABLE_TYPE_MAPPING_KEY) { - return (Embeddable) persistentType.getMapping(); - } - } - return null; - } - - public static ColumnMapping getColumnMapping(String attributeName, Embeddable embeddable) { - if (attributeName == null || embeddable == null) { - return null; - } - for (Iterator<PersistentAttribute> stream = embeddable.getPersistentType().allAttributes(); stream.hasNext();) { - PersistentAttribute persAttribute = stream.next(); - if (attributeName.equals(persAttribute.getName())) { - if (persAttribute.getMapping() instanceof ColumnMapping) { - return (ColumnMapping) persAttribute.getMapping(); - } - } - } - return null; - } -} |