com.bstek.urule.console.repository.database.system.OracleFileSystem Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2017 Bstek
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
******************************************************************************/
package com.bstek.urule.console.repository.database.system;
import javax.sql.DataSource;
import org.apache.jackrabbit.core.util.db.CheckSchemaOperation;
import org.apache.jackrabbit.core.util.db.ConnectionHelper;
import org.apache.jackrabbit.core.util.db.OracleConnectionHelper;
import com.bstek.urule.console.repository.database.BaseDbFileSystem;
/**
* @author Jacky.gao
* @since 2017年12月6日
*/
public class OracleFileSystem extends BaseDbFileSystem{
@Override
public String databaseType() {
return "oracle";
}
/**
* The default tablespace clause used when {@link #tablespace} or {@link #indexTablespace}
* are not specified.
*/
protected static final String DEFAULT_TABLESPACE_CLAUSE = "";
/**
* Name of the replacement variable in the DDL for {@link #tablespace}.
*/
protected static final String TABLESPACE_VARIABLE = "${tablespace}";
/**
* Name of the replacement variable in the DDL for {@link #indexTablespace}.
*/
protected static final String INDEX_TABLESPACE_VARIABLE = "${indexTablespace}";
/** The Oracle tablespace to use for tables */
protected String tablespace;
/** The Oracle tablespace to use for indexes */
protected String indexTablespace;
/**
* Creates a new OracleFileSystem instance.
*/
public OracleFileSystem() {
// preset some attributes to reasonable defaults
schema = "oracle";
driver = "oracle.jdbc.OracleDriver";
schemaObjectPrefix = "";
tablespace = DEFAULT_TABLESPACE_CLAUSE;
indexTablespace = DEFAULT_TABLESPACE_CLAUSE;
initialized = false;
}
/**
* Returns the configured Oracle tablespace for tables.
* @return the configured Oracle tablespace for tables.
*/
public String getTablespace() {
return tablespace;
}
/**
* Sets the Oracle tablespace for tables.
* @param tablespaceName the Oracle tablespace for tables.
*/
public void setTablespace(String tablespaceName) {
this.tablespace = this.buildTablespaceClause(tablespaceName);
}
/**
* Returns the configured Oracle tablespace for indexes.
* @return the configured Oracle tablespace for indexes.
*/
public String getIndexTablespace() {
return indexTablespace;
}
/**
* Sets the Oracle tablespace for indexes.
* @param tablespaceName the Oracle tablespace for indexes.
*/
public void setIndexTablespace(String tablespaceName) {
this.indexTablespace = this.buildTablespaceClause(tablespaceName);
}
/**
* Constructs the tablespace <tbs name> clause from
* the supplied tablespace name. If the name is empty, {@link #DEFAULT_TABLESPACE_CLAUSE}
* is returned instead.
*
* @param tablespaceName A tablespace name
* @return A tablespace clause using the supplied name or
* {@value #DEFAULT_TABLESPACE_CLAUSE} if the name is empty
*/
private String buildTablespaceClause(String tablespaceName) {
if (tablespaceName == null || tablespaceName.trim().length() == 0) {
return DEFAULT_TABLESPACE_CLAUSE;
} else {
return "tablespace " + tablespaceName.trim();
}
}
//-----------------------------------------< DatabaseFileSystem overrides >
/**
* {@inheritDoc}
*/
@Override
protected ConnectionHelper createConnectionHelper(DataSource dataSrc) throws Exception {
OracleConnectionHelper helper = new OracleConnectionHelper(dataSrc, false);
helper.init();
return helper;
}
/**
* {@inheritDoc}
*/
@Override
protected CheckSchemaOperation createCheckSchemaOperation() {
if (DEFAULT_TABLESPACE_CLAUSE.equals(indexTablespace) && !DEFAULT_TABLESPACE_CLAUSE.equals(tablespace)) {
// tablespace was set but not indexTablespace : use the same for both
indexTablespace = tablespace;
}
return super.createCheckSchemaOperation()
.addVariableReplacement(TABLESPACE_VARIABLE, tablespace)
.addVariableReplacement(INDEX_TABLESPACE_VARIABLE, indexTablespace);
}
//-----------------------------------------< DatabaseFileSystem overrides >
/**
* Builds the SQL statements
*
* Since Oracle treats emtpy strings and BLOBs as null values the SQL
* statements had to be adapated accordingly. The following changes were
* necessary:
*
* - The distinction between file and folder entries is based on
* FSENTRY_LENGTH being null/not null rather than FSENTRY_DATA being
* null/not null because FSENTRY_DATA of a 0-length (i.e. empty) file is
* null in Oracle.
* - Folder entries: Since the root folder has an empty name (which would
* be null in Oracle), an empty name is automatically converted and treated
* as " ".
*
*/
protected void buildSQLStatements() {
insertFileSQL = "insert into "
+ schemaObjectPrefix + "FSENTRY "
+ "(FSENTRY_PATH, FSENTRY_NAME, FSENTRY_DATA, "
+ "FSENTRY_LASTMOD, FSENTRY_LENGTH) "
+ "values (?, ?, ?, ?, ?)";
insertFolderSQL = "insert into "
+ schemaObjectPrefix + "FSENTRY "
+ "(FSENTRY_PATH, FSENTRY_NAME, FSENTRY_LASTMOD, FSENTRY_LENGTH) "
+ "values (?, nvl(?, ' '), ?, null)";
updateDataSQL = "update "
+ schemaObjectPrefix + "FSENTRY "
+ "set FSENTRY_DATA = ?, FSENTRY_LASTMOD = ?, FSENTRY_LENGTH = ? "
+ "where FSENTRY_PATH = ? and FSENTRY_NAME = ? "
+ "and FSENTRY_LENGTH is not null";
updateLastModifiedSQL = "update "
+ schemaObjectPrefix + "FSENTRY set FSENTRY_LASTMOD = ? "
+ "where FSENTRY_PATH = ? and FSENTRY_NAME = ? "
+ "and FSENTRY_LENGTH is not null";
selectExistSQL = "select 1 from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME = nvl(?, ' ')";
selectFileExistSQL = "select 1 from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME = ? and FSENTRY_LENGTH is not null";
selectFolderExistSQL = "select 1 from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME = nvl(?, ' ') and FSENTRY_LENGTH is null";
selectFileNamesSQL = "select FSENTRY_NAME from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_LENGTH is not null";
selectFolderNamesSQL = "select FSENTRY_NAME from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME != ' ' "
+ "and FSENTRY_LENGTH is null";
selectFileAndFolderNamesSQL = "select FSENTRY_NAME from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME != ' '";
selectChildCountSQL = "select count(FSENTRY_NAME) from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME != ' '";
selectDataSQL = "select nvl(FSENTRY_DATA, empty_blob()) from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME = ? and FSENTRY_LENGTH is not null";
selectLastModifiedSQL = "select FSENTRY_LASTMOD from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME = nvl(?, ' ')";
selectLengthSQL = "select nvl(FSENTRY_LENGTH, 0) from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME = ? and FSENTRY_LENGTH is not null";
deleteFileSQL = "delete from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME = ? and FSENTRY_LENGTH is not null";
deleteFolderSQL = "delete from "
+ schemaObjectPrefix + "FSENTRY where "
+ "(FSENTRY_PATH = ? and FSENTRY_NAME = nvl(?, ' ') and FSENTRY_LENGTH is null) "
+ "or (FSENTRY_PATH = ?) "
+ "or (FSENTRY_PATH like ?) ";
copyFileSQL = "insert into "
+ schemaObjectPrefix + "FSENTRY "
+ "(FSENTRY_PATH, FSENTRY_NAME, FSENTRY_DATA, "
+ "FSENTRY_LASTMOD, FSENTRY_LENGTH) "
+ "select ?, ?, FSENTRY_DATA, "
+ "FSENTRY_LASTMOD, FSENTRY_LENGTH from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_NAME = ? and FSENTRY_LENGTH is not null";
copyFilesSQL = "insert into "
+ schemaObjectPrefix + "FSENTRY "
+ "(FSENTRY_PATH, FSENTRY_NAME, FSENTRY_DATA, "
+ "FSENTRY_LASTMOD, FSENTRY_LENGTH) "
+ "select ?, FSENTRY_NAME, FSENTRY_DATA, "
+ "FSENTRY_LASTMOD, FSENTRY_LENGTH from "
+ schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
+ "and FSENTRY_LENGTH is not null";
}
}
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