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liquibase.statement.ExecutablePreparedStatementBase Maven / Gradle / Ivy
package liquibase.statement;
import liquibase.change.ColumnConfig;
import liquibase.changelog.ChangeSet;
import liquibase.database.Database;
import liquibase.database.PreparedStatementFactory;
import liquibase.exception.DatabaseException;
import liquibase.exception.UnexpectedLiquibaseException;
import liquibase.logging.LogService;
import liquibase.logging.LogType;
import liquibase.logging.Logger;
import liquibase.resource.ResourceAccessor;
import liquibase.resource.UtfBomAwareReader;
import liquibase.util.JdbcUtils;
import liquibase.util.StreamUtil;
import liquibase.util.StringUtils;
import liquibase.util.file.FilenameUtils;
import java.io.*;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.*;
import static java.util.ResourceBundle.getBundle;
public abstract class ExecutablePreparedStatementBase implements ExecutablePreparedStatement {
private static final Logger LOG = LogService.getLog(ExecutablePreparedStatementBase.class);
private static ResourceBundle coreBundle = getBundle("liquibase/i18n/liquibase-core");
protected Database database;
private String catalogName;
private String schemaName;
private String tableName;
private List columns;
private ChangeSet changeSet;
private Set closeables;
private ResourceAccessor resourceAccessor;
protected ExecutablePreparedStatementBase(Database database, String catalogName, String schemaName, String
tableName, List columns, ChangeSet changeSet, ResourceAccessor resourceAccessor) {
this.database = database;
this.changeSet = changeSet;
this.catalogName = catalogName;
this.schemaName = schemaName;
this.tableName = tableName;
this.columns = columns;
this.changeSet = changeSet;
this.closeables = new HashSet<>();
this.resourceAccessor = resourceAccessor;
}
private static InputStream createStream(InputStream in) {
return (in instanceof BufferedInputStream) ? in : new BufferedInputStream(in);
}
private static Reader createReader(InputStream in, String encoding) {
return new BufferedReader((StringUtils.trimToNull(encoding) == null) ? new UtfBomAwareReader(in) : new
UtfBomAwareReader(in, encoding));
}
@Override
public void execute(PreparedStatementFactory factory) throws DatabaseException {
// build the sql statement
List cols = new ArrayList<>(getColumns().size());
String sql = generateSql(cols);
LOG.info(LogType.WRITE_SQL, sql);
LOG.debug(LogType.LOG, "Number of columns = " + cols.size());
// create prepared statement
PreparedStatement stmt = factory.create(sql);
try {
attachParams(cols, stmt);
// trigger execution
executePreparedStatement(stmt);
} catch (SQLException e) {
throw new DatabaseException(e);
} finally {
for (Closeable closeable : closeables) {
StreamUtil.closeQuietly(closeable);
}
JdbcUtils.closeStatement(stmt);
}
}
protected void executePreparedStatement(PreparedStatement stmt) throws SQLException {
stmt.execute();
}
/**
* Sets the list of bind variables for the execution of a DML statement
* @param cols a list of columns with their designated values
* @param stmt the PreparedStatement to which the values are to be attached
* @throws SQLException if JDBC objects to a setting (non-existent bind number, wrong column type etc.)
* @throws DatabaseException if an I/O error occurs during the read of LOB values
*/
protected void attachParams(List cols, PreparedStatement stmt)
throws SQLException, DatabaseException {
int i = 1; // index starts from 1
for (ColumnConfig col : cols) {
LOG.debug(LogType.LOG, "Applying column parameter = " + i + " for column " + col.getName());
applyColumnParameter(stmt, i, col);
i++;
}
}
protected abstract String generateSql(List cols);
/**
* Sets a single bind variable for a statement to its designated value
* @param stmt the PreparedStatement whose parameter is to be set
* @param i the parameter index (first bind variable is 1)
* @param col a ColumnConfig with information about the column, its type, and the desired value
* @throws SQLException if JDBC objects to a setting (non-existent bind number, wrong column type etc.)
* @throws DatabaseException if an I/O error occurs during the read of LOB values
*/
private void applyColumnParameter(PreparedStatement stmt, int i, ColumnConfig col) throws SQLException,
DatabaseException {
if (col.getValue() != null) {
LOG.debug(LogType.LOG, "value is string = " + col.getValue());
stmt.setString(i, col.getValue());
} else if (col.getValueBoolean() != null) {
LOG.debug(LogType.LOG, "value is boolean = " + col.getValueBoolean());
stmt.setBoolean(i, col.getValueBoolean());
} else if (col.getValueNumeric() != null) {
LOG.debug(LogType.LOG, "value is numeric = " + col.getValueNumeric());
Number number = col.getValueNumeric();
if (number instanceof ColumnConfig.ValueNumeric) {
ColumnConfig.ValueNumeric valueNumeric = (ColumnConfig.ValueNumeric) number;
number = valueNumeric.getDelegate();
}
if (number instanceof Long) {
stmt.setLong(i, number.longValue());
} else if (number instanceof Integer) {
stmt.setInt(i, number.intValue());
} else if (number instanceof Double) {
stmt.setDouble(i, number.doubleValue());
} else if (number instanceof Float) {
stmt.setFloat(i, number.floatValue());
} else if (number instanceof BigDecimal) {
stmt.setBigDecimal(i, (BigDecimal) number);
} else if (number instanceof BigInteger) {
stmt.setInt(i, number.intValue());
} else {
throw new UnexpectedLiquibaseException(
String.format(
coreBundle.getString("jdbc.bind.parameter.unknown.numeric.value.type"),
col.getName(),
col.getValueNumeric().toString(),
col.getValueNumeric().getClass().getName()
)
);
}
} else if (col.getValueDate() != null) {
LOG.debug(LogType.LOG, "value is date = " + col.getValueDate());
if (col.getValueDate() instanceof Timestamp) {
stmt.setTimestamp(i, (Timestamp) col.getValueDate());
} else {
stmt.setDate(i, new java.sql.Date(col.getValueDate().getTime()));
}
} else if (col.getValueBlobFile() != null) {
LOG.debug(LogType.LOG, "value is blob = " + col.getValueBlobFile());
try {
LOBContent lob = toBinaryStream(col.getValueBlobFile());
if (lob.length <= Integer.MAX_VALUE) {
stmt.setBinaryStream(i, lob.content, (int) lob.length);
} else {
stmt.setBinaryStream(i, lob.content, lob.length);
}
} catch (IOException e) {
throw new DatabaseException(e.getMessage(), e); // wrap
}
} else if (col.getValueClobFile() != null) {
try {
LOG.debug(LogType.LOG, "value is clob = " + col.getValueClobFile());
LOBContent lob = toCharacterStream(col.getValueClobFile(), col.getEncoding());
if (lob.length <= Integer.MAX_VALUE) {
stmt.setCharacterStream(i, lob.content, (int) lob.length);
} else {
stmt.setCharacterStream(i, lob.content, lob.length);
}
} catch (IOException e) {
throw new DatabaseException(e.getMessage(), e); // wrap
}
} else {
// NULL values might intentionally be set into a change, we must also add them to the prepared statement
LOG.debug(LogType.LOG, "value is explicit null");
stmt.setNull(i, java.sql.Types.NULL);
}
}
private LOBContent toBinaryStream(String valueLobFile) throws DatabaseException, IOException {
InputStream in = getResourceAsStream(valueLobFile);
if (in == null) {
throw new DatabaseException("BLOB resource not found: " + valueLobFile);
}
try {
if (in instanceof FileInputStream) {
InputStream bufferedInput = createStream(in);
return new LOBContent<>(bufferedInput, ((FileInputStream) in).getChannel().size());
}
in = createStream(in);
final int IN_MEMORY_THRESHOLD = 100_000;
if (in.markSupported()) {
in.mark(IN_MEMORY_THRESHOLD);
}
long length = StreamUtil.getContentLength(in);
if (in.markSupported() && (length <= IN_MEMORY_THRESHOLD)) {
in.reset();
} else {
StreamUtil.closeQuietly(in);
in = getResourceAsStream(valueLobFile);
in = createStream(in);
}
return new LOBContent<>(in, length);
} finally {
if (in != null) {
closeables.add(in);
}
}
}
private LOBContent toCharacterStream(String valueLobFile, String encoding)
throws IOException, DatabaseException {
InputStream in = getResourceAsStream(valueLobFile);
if (in == null) {
throw new DatabaseException("CLOB resource not found: " + valueLobFile);
}
final int IN_MEMORY_THRESHOLD = 100_000;
Reader reader = null;
try {
reader = createReader(in, encoding);
if (reader.markSupported()) {
reader.mark(IN_MEMORY_THRESHOLD);
}
long length = StreamUtil.getContentLength(reader);
if (reader.markSupported() && (length <= IN_MEMORY_THRESHOLD)) {
reader.reset();
} else {
StreamUtil.closeQuietly(reader);
in = getResourceAsStream(valueLobFile);
reader = createReader(in, encoding);
}
return new LOBContent<>(reader, length);
} finally {
if (reader != null) {
closeables.add(reader);
}
if (in != null) {
closeables.add(in);
}
}
}
private InputStream getResourceAsStream(String valueLobFile) throws IOException {
String fileName = getFileName(valueLobFile);
Set streams = this.resourceAccessor.getResourcesAsStream(fileName);
if ((streams == null) || streams.isEmpty()) {
return null;
}
if (streams.size() > 1) {
for (InputStream stream : streams) {
stream.close();
}
throw new IOException(streams.size() + " matched " + valueLobFile);
}
return streams.iterator().next();
}
private String getFileName(String fileName) {
// Most of this method were copy-pasted from XMLChangeLogSAXHandler#handleIncludedChangeLog()
String relativeBaseFileName = changeSet.getChangeLog().getPhysicalFilePath();
// workaround for FilenameUtils.normalize() returning null for relative paths like ../conf/liquibase.xml
String tempFile = FilenameUtils.concat(FilenameUtils.getFullPath(relativeBaseFileName), fileName);
if (tempFile != null) {
fileName = tempFile;
} else {
fileName = FilenameUtils.getFullPath(relativeBaseFileName) + fileName;
}
return fileName;
}
/**
* Gets absolute and normalized path for path.
* If path is relative, absolute path is calculated relative to change log file.
*
* @param path Absolute or relative path.
* @return Absolute and normalized path.
*/
public String getAbsolutePath(String path) {
String p = path;
File f = new File(p);
if (!f.isAbsolute()) {
String basePath = FilenameUtils.getFullPath(changeSet.getChangeLog().getPhysicalFilePath());
p = FilenameUtils.normalize(basePath + p);
}
return p;
}
@Override
public boolean skipOnUnsupported() {
return false;
}
public String getCatalogName() {
return catalogName;
}
public String getSchemaName() {
return schemaName;
}
public String getTableName() {
return tableName;
}
public List getColumns() {
return columns;
}
private class LOBContent {
private final T content;
private final long length;
LOBContent(T content, long length) {
this.content = content;
this.length = length;
}
}
}
