| /* |
| * Copyright (c) 2008, 2009, 2011-2013, 2015 Eike Stepper (Berlin, Germany) and others. |
| * 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: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.net4j.internal.db.ddl; |
| |
| import org.eclipse.net4j.db.DBException; |
| import org.eclipse.net4j.db.ddl.IDBField; |
| import org.eclipse.net4j.db.ddl.IDBIndex; |
| import org.eclipse.net4j.db.ddl.IDBIndexField; |
| import org.eclipse.net4j.db.ddl.IDBSchema; |
| import org.eclipse.net4j.db.ddl.IDBSchemaElement; |
| import org.eclipse.net4j.db.ddl.IDBSchemaVisitor; |
| import org.eclipse.net4j.db.ddl.IDBTable; |
| import org.eclipse.net4j.db.ddl.SchemaElementNotFoundException; |
| import org.eclipse.net4j.spi.db.ddl.InternalDBField; |
| import org.eclipse.net4j.spi.db.ddl.InternalDBIndex; |
| import org.eclipse.net4j.spi.db.ddl.InternalDBSchema; |
| import org.eclipse.net4j.spi.db.ddl.InternalDBTable; |
| import org.eclipse.net4j.util.om.OMPlatform; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * @author Eike Stepper |
| */ |
| public class DBIndex extends DBSchemaElement implements InternalDBIndex |
| { |
| public static final ThreadLocal<Boolean> FIX_NULLABLE_INDEX_COLUMNS = new InheritableThreadLocal<Boolean>(); |
| |
| public static final ThreadLocal<Set<IDBField>> NULLABLE_INDEX_FIELDS = new InheritableThreadLocal<Set<IDBField>>(); |
| |
| private static final boolean DISABLE_NULLABLE_CHECK = Boolean |
| .parseBoolean(OMPlatform.INSTANCE.getProperty("org.eclipse.net4j.db.DisableNullableCheck", "true")); |
| |
| private static final long serialVersionUID = 1L; |
| |
| private IDBTable table; |
| |
| private Type type; |
| |
| private List<IDBIndexField> indexFields = new ArrayList<IDBIndexField>(); |
| |
| public DBIndex(IDBTable table, String name, Type type, IDBField[] fields) |
| { |
| super(name); |
| this.table = table; |
| this.type = type; |
| |
| for (int i = 0; i < fields.length; i++) |
| { |
| IDBField field = fields[i]; |
| addIndexField(field); |
| } |
| } |
| |
| /** |
| * Constructor for deserialization. |
| */ |
| protected DBIndex() |
| { |
| } |
| |
| @Override |
| public IDBIndex getWrapper() |
| { |
| return (IDBIndex)super.getWrapper(); |
| } |
| |
| public SchemaElementType getSchemaElementType() |
| { |
| return SchemaElementType.INDEX; |
| } |
| |
| public IDBSchema getSchema() |
| { |
| return table.getSchema(); |
| } |
| |
| public IDBTable getTable() |
| { |
| return table; |
| } |
| |
| public IDBTable getParent() |
| { |
| return getTable(); |
| } |
| |
| public Type getType() |
| { |
| return type; |
| } |
| |
| public void setType(Type type) |
| { |
| assertUnlocked(); |
| this.type = type; |
| } |
| |
| @Deprecated |
| public int getPosition() |
| { |
| IDBIndex[] indices = table.getIndices(); |
| return Arrays.asList(indices).indexOf(this); |
| } |
| |
| public IDBIndexField addIndexField(IDBField field) |
| { |
| assertUnlocked(); |
| |
| if (type != Type.NON_UNIQUE && !field.isNotNull()) |
| { |
| if (!DISABLE_NULLABLE_CHECK && FIX_NULLABLE_INDEX_COLUMNS.get() != Boolean.TRUE) |
| { |
| Exception constructionStackTrace = ((InternalDBField)field).getConstructionStackTrace(); |
| throw new DBException( |
| "Index field is nullable: " + field //$NON-NLS-1$ |
| + " (to disable this check run with '-Dorg.eclipse.net4j.db.DisableNullableCheck=true')", |
| constructionStackTrace); |
| } |
| |
| Set<IDBField> nullableIndexFields = NULLABLE_INDEX_FIELDS.get(); |
| if (nullableIndexFields == null) |
| { |
| nullableIndexFields = new HashSet<IDBField>(); |
| NULLABLE_INDEX_FIELDS.set(nullableIndexFields); |
| } |
| |
| nullableIndexFields.add(field); |
| } |
| |
| if (field.getTable() != table) |
| { |
| throw new DBException("Index field is from different table: " + field); //$NON-NLS-1$ |
| } |
| |
| String name = field.getName(); |
| if (getIndexField(name) != null) |
| { |
| throw new DBException("Index field exists: " + name); //$NON-NLS-1$ |
| } |
| |
| int position = indexFields.size(); |
| IDBIndexField indexField = new DBIndexField(this, field, position); |
| indexFields.add(indexField); |
| resetElements(); |
| return indexField; |
| } |
| |
| public IDBIndexField addIndexField(String name) throws SchemaElementNotFoundException |
| { |
| IDBField field = table.getFieldSafe(name); |
| return addIndexField(field); |
| } |
| |
| public void removeIndexField(IDBIndexField indexFieldToRemove) |
| { |
| assertUnlocked(); |
| |
| boolean found = false; |
| for (Iterator<IDBIndexField> it = indexFields.iterator(); it.hasNext();) |
| { |
| IDBIndexField indexField = it.next(); |
| if (found) |
| { |
| ((InternalDBField)indexField).setPosition(indexField.getPosition() - 1); |
| } |
| else if (indexField == indexFieldToRemove) |
| { |
| it.remove(); |
| found = true; |
| } |
| } |
| |
| resetElements(); |
| } |
| |
| public IDBIndexField getIndexFieldSafe(String name) throws SchemaElementNotFoundException |
| { |
| IDBIndexField indexField = getIndexField(name); |
| if (indexField == null) |
| { |
| throw new SchemaElementNotFoundException(this, SchemaElementType.INDEX_FIELD, name); |
| } |
| |
| return indexField; |
| } |
| |
| public IDBIndexField getIndexField(String name) |
| { |
| return findElement(getIndexFields(), name); |
| } |
| |
| public IDBIndexField getIndexField(int position) |
| { |
| return indexFields.get(position); |
| } |
| |
| public IDBField getFieldSafe(String name) throws SchemaElementNotFoundException |
| { |
| IDBIndexField indexField = getIndexFieldSafe(name); |
| return indexField.getField(); |
| } |
| |
| public IDBField getField(String name) |
| { |
| name = name(name); |
| for (IDBIndexField indexField : indexFields) |
| { |
| if (indexField.getName() == name) |
| { |
| return indexField.getField(); |
| } |
| } |
| |
| return null; |
| } |
| |
| public IDBField getField(int position) |
| { |
| return indexFields.get(position).getField(); |
| } |
| |
| public int getFieldCount() |
| { |
| return indexFields.size(); |
| } |
| |
| public IDBIndexField[] getIndexFields() |
| { |
| return indexFields.toArray(new IDBIndexField[indexFields.size()]); |
| } |
| |
| public IDBField[] getFields() |
| { |
| IDBField[] fields = new IDBField[indexFields.size()]; |
| for (int i = 0; i < fields.length; i++) |
| { |
| fields[i] = getField(i); |
| } |
| |
| return fields; |
| } |
| |
| public String getFullName() |
| { |
| return getName(); |
| } |
| |
| public void remove() |
| { |
| ((InternalDBTable)table).removeIndex(this); |
| } |
| |
| @Override |
| protected void collectElements(List<IDBSchemaElement> elements) |
| { |
| elements.addAll(indexFields); |
| } |
| |
| @Override |
| protected void doAccept(IDBSchemaVisitor visitor) |
| { |
| visitor.visit(this); |
| } |
| |
| @Override |
| protected void dumpAdditionalProperties(Writer writer) throws IOException |
| { |
| writer.append(", type="); |
| writer.append(String.valueOf(getType())); |
| } |
| |
| private void assertUnlocked() |
| { |
| ((InternalDBSchema)table.getSchema()).assertUnlocked(); |
| } |
| } |