site.sorghum.anno._common.util.ScriptUtils Maven / Gradle / Ivy
package site.sorghum.anno._common.util;
import cn.hutool.core.lang.Assert;
import cn.hutool.core.util.StrUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import site.sorghum.anno._ddl.DdlException;
import javax.script.ScriptException;
import java.io.IOException;
import java.io.LineNumberReader;
import java.io.Reader;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
/**
* Generic utility methods for working with SQL scripts in conjunction with JDBC.
*
* Mainly for internal use within the framework.
*
* @author Thomas Risberg
* @author Sam Brannen
* @author Juergen Hoeller
* @author Keith Donald
* @author Dave Syer
* @author Chris Beams
* @author Oliver Gierke
* @author Chris Baldwin
* @author Nicolas Debeissat
* @author Phillip Webb
* @since 4.0.3
*/
public abstract class ScriptUtils {
/**
* Default statement separator within SQL scripts: {@code ";"}.
*/
public static final String DEFAULT_STATEMENT_SEPARATOR = ";";
/**
* Fallback statement separator within SQL scripts: {@code "\n"}.
*
Used if neither a custom separator nor the
* {@link #DEFAULT_STATEMENT_SEPARATOR} is present in a given script.
*/
public static final String FALLBACK_STATEMENT_SEPARATOR = "\n";
/**
* End of file (EOF) SQL statement separator: {@code "^^^ END OF SCRIPT ^^^"}.
*
This value may be supplied as the {@code separator} to {@link
* #executeSqlScript(Connection, Reader, boolean, boolean, String, String, String, String)}
* to denote that an SQL script contains a single statement (potentially
* spanning multiple lines) with no explicit statement separator. Note that
* such a script should not actually contain this value; it is merely a
* virtual statement separator.
*/
public static final String EOF_STATEMENT_SEPARATOR = "^^^ END OF SCRIPT ^^^";
/**
* Default prefix for single-line comments within SQL scripts: {@code "--"}.
*/
public static final String DEFAULT_COMMENT_PREFIX = "--";
/**
* Default prefixes for single-line comments within SQL scripts: {@code ["--"]}.
*
* @since 5.2
*/
public static final String[] DEFAULT_COMMENT_PREFIXES = {DEFAULT_COMMENT_PREFIX};
/**
* Default start delimiter for block comments within SQL scripts: {@code "/*"}.
*/
public static final String DEFAULT_BLOCK_COMMENT_START_DELIMITER = "/*";
/**
* Default end delimiter for block comments within SQL scripts: "*/".
*/
public static final String DEFAULT_BLOCK_COMMENT_END_DELIMITER = "*/";
private static final Logger logger = LoggerFactory.getLogger(ScriptUtils.class);
/**
* Execute the given SQL script using default settings for statement
* separators, comment delimiters, and exception handling flags.
*
Statement separators and comments will be removed before executing
* individual statements within the supplied script.
*
Warning: this method does not release the
* provided {@link Connection}.
*
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @throws ScriptException if an error occurred while executing the SQL script
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #DEFAULT_COMMENT_PREFIX
* @see #DEFAULT_BLOCK_COMMENT_START_DELIMITER
* @see #DEFAULT_BLOCK_COMMENT_END_DELIMITER
*/
public static void executeSqlScript(Connection connection, Reader resource) throws ScriptException {
executeSqlScript(connection, resource, false, false, DEFAULT_COMMENT_PREFIX, DEFAULT_STATEMENT_SEPARATOR,
DEFAULT_BLOCK_COMMENT_START_DELIMITER, DEFAULT_BLOCK_COMMENT_END_DELIMITER);
}
/**
* Execute the given SQL script.
*
Statement separators and comments will be removed before executing
* individual statements within the supplied script.
*
Warning: this method does not release the
* provided {@link Connection}.
*
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @param continueOnError whether to continue without throwing an exception
* in the event of an error
* @param ignoreFailedDrops whether to continue in the event of specifically
* an error on a {@code DROP} statement
* @param commentPrefix the prefix that identifies single-line comments in the
* SQL script (typically "--")
* @param separator the script statement separator; defaults to
* {@value #DEFAULT_STATEMENT_SEPARATOR} if not specified and falls back to
* {@value #FALLBACK_STATEMENT_SEPARATOR} as a last resort; may be set to
* {@value #EOF_STATEMENT_SEPARATOR} to signal that the script contains a
* single statement without a separator
* @param blockCommentStartDelimiter the start block comment delimiter
* @param blockCommentEndDelimiter the end block comment delimiter
* @throws ScriptException if an error occurred while executing the SQL script
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #FALLBACK_STATEMENT_SEPARATOR
* @see #EOF_STATEMENT_SEPARATOR
*/
public static void executeSqlScript(Connection connection, Reader resource, boolean continueOnError,
boolean ignoreFailedDrops, String commentPrefix, String separator,
String blockCommentStartDelimiter, String blockCommentEndDelimiter) throws ScriptException {
executeSqlScript(connection, resource, continueOnError, ignoreFailedDrops,
new String[]{commentPrefix}, separator, blockCommentStartDelimiter,
blockCommentEndDelimiter);
}
/**
* Execute the given SQL script.
*
Statement separators and comments will be removed before executing
* individual statements within the supplied script.
*
Warning: this method does not release the
* provided {@link Connection}.
*
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @param continueOnError whether to continue without throwing an exception
* in the event of an error
* @param ignoreFailedDrops whether to continue in the event of specifically
* an error on a {@code DROP} statement
* @param commentPrefixes the prefixes that identify single-line comments in the
* SQL script (typically "--")
* @param separator the script statement separator; defaults to
* {@value #DEFAULT_STATEMENT_SEPARATOR} if not specified and falls back to
* {@value #FALLBACK_STATEMENT_SEPARATOR} as a last resort; may be set to
* {@value #EOF_STATEMENT_SEPARATOR} to signal that the script contains a
* single statement without a separator
* @param blockCommentStartDelimiter the start block comment delimiter
* @param blockCommentEndDelimiter the end block comment delimiter
* @throws ScriptException if an error occurred while executing the SQL script
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #FALLBACK_STATEMENT_SEPARATOR
* @see #EOF_STATEMENT_SEPARATOR
* @since 5.2
*/
public static void executeSqlScript(Connection connection, Reader resource, boolean continueOnError,
boolean ignoreFailedDrops, String[] commentPrefixes, String separator,
String blockCommentStartDelimiter, String blockCommentEndDelimiter) throws ScriptException {
try {
if (logger.isDebugEnabled()) {
logger.debug("Executing SQL script from " + resource);
}
long startTime = System.currentTimeMillis();
List statements = getStatements(resource, commentPrefixes, separator, blockCommentStartDelimiter, blockCommentEndDelimiter);
int stmtNumber = 0;
Statement stmt = connection.createStatement();
try {
for (String statement : statements) {
stmtNumber++;
try {
stmt.execute(statement);
int rowsAffected = stmt.getUpdateCount();
if (logger.isDebugEnabled()) {
logger.debug(rowsAffected + " returned as update count for SQL: " + statement);
SQLWarning warningToLog = stmt.getWarnings();
while (warningToLog != null) {
logger.debug("SQLWarning ignored: SQL state '" + warningToLog.getSQLState() +
"', error code '" + warningToLog.getErrorCode() +
"', message [" + warningToLog.getMessage() + "]");
warningToLog = warningToLog.getNextWarning();
}
}
} catch (SQLException ex) {
boolean dropStatement = StrUtil.startWithIgnoreCase(statement.trim(), "drop");
if (continueOnError || (dropStatement && ignoreFailedDrops)) {
if (logger.isDebugEnabled()) {
logger.debug(buildErrorMessage(statement, stmtNumber, resource), ex);
}
} else {
throw new DdlException(buildErrorMessage(statement, stmtNumber, resource), ex);
}
}
}
} finally {
try {
stmt.close();
} catch (Throwable ex) {
logger.trace("Could not close JDBC Statement", ex);
}
}
long elapsedTime = System.currentTimeMillis() - startTime;
if (logger.isDebugEnabled()) {
logger.debug("Executed SQL script from " + resource + " in " + elapsedTime + " ms.");
}
} catch (Exception ex) {
if (ex instanceof ScriptException) {
throw (ScriptException) ex;
}
throw new DdlException(
"Failed to execute database script from resource [" + resource + "]", ex);
}
}
public static List getStatements(Reader resource) {
return getStatements(resource, new String[]{DEFAULT_COMMENT_PREFIX, "#"}, DEFAULT_STATEMENT_SEPARATOR,
DEFAULT_BLOCK_COMMENT_START_DELIMITER, DEFAULT_BLOCK_COMMENT_END_DELIMITER);
}
private static List getStatements(Reader resource, String[] commentPrefixes, String separator, String blockCommentStartDelimiter, String blockCommentEndDelimiter) {
String script;
try {
script = readScript(resource, separator, commentPrefixes, blockCommentEndDelimiter);
} catch (IOException ex) {
throw new DdlException(ex);
}
if (separator == null) {
separator = DEFAULT_STATEMENT_SEPARATOR;
}
if (!EOF_STATEMENT_SEPARATOR.equals(separator) &&
!containsStatementSeparator(resource, script, separator, commentPrefixes,
blockCommentStartDelimiter, blockCommentEndDelimiter)) {
separator = FALLBACK_STATEMENT_SEPARATOR;
}
List statements = new ArrayList<>();
splitSqlScript(resource, script, separator, commentPrefixes, blockCommentStartDelimiter,
blockCommentEndDelimiter, statements);
return statements;
}
public static String buildErrorMessage(String stmt, int stmtNumber, Reader encodedResource) {
return String.format("Failed to execute SQL script statement #%s of %s: %s", stmtNumber, encodedResource, stmt);
}
/**
* Read a script from the provided resource, using the supplied comment prefixes
* and statement separator, and build a {@code String} containing the lines.
* Lines beginning with one of the comment prefixes are excluded
* from the results; however, line comments anywhere else — for example,
* within a statement — will be included in the results.
*
* @param resource the {@code EncodedResource} containing the script
* to be processed
* @param separator the statement separator in the SQL script (typically ";")
* @param commentPrefixes the prefixes that identify comments in the SQL script
* (typically "--")
* @param blockCommentEndDelimiter the end block comment delimiter
* @return a {@code String} containing the script lines
* @throws IOException in case of I/O errors
*/
static String readScript(Reader resource, String separator,
String[] commentPrefixes, String blockCommentEndDelimiter) throws IOException {
try (LineNumberReader lnr = new LineNumberReader(resource)) {
return readScript(lnr, commentPrefixes, separator, blockCommentEndDelimiter);
}
}
/**
* Read a script from the provided {@code LineNumberReader}, using the supplied
* comment prefix and statement separator, and build a {@code String} containing
* the lines.
*
Lines beginning with the comment prefix are excluded from the
* results; however, line comments anywhere else — for example, within
* a statement — will be included in the results.
*
* @param lineNumberReader the {@code LineNumberReader} containing the script
* to be processed
* @param commentPrefix the prefix that identifies comments in the SQL script
* (typically "--")
* @param separator the statement separator in the SQL script (typically ";")
* @param blockCommentEndDelimiter the end block comment delimiter
* @return a {@code String} containing the script lines
* @throws IOException in case of I/O errors
* @deprecated as of Spring Framework 5.2.16 with no plans for replacement.
* This is an internal API and will likely be removed in Spring Framework 6.0.
*/
@Deprecated
public static String readScript(LineNumberReader lineNumberReader, String commentPrefix,
String separator, String blockCommentEndDelimiter) throws IOException {
String[] commentPrefixes = (commentPrefix != null) ? new String[]{commentPrefix} : null;
return readScript(lineNumberReader, commentPrefixes, separator, blockCommentEndDelimiter);
}
/**
* Read a script from the provided {@code LineNumberReader}, using the supplied
* comment prefixes and statement separator, and build a {@code String} containing
* the lines.
*
Lines beginning with one of the comment prefixes are excluded
* from the results; however, line comments anywhere else — for example,
* within a statement — will be included in the results.
*
* @param lineNumberReader the {@code LineNumberReader} containing the script
* to be processed
* @param commentPrefixes the prefixes that identify comments in the SQL script
* (typically "--")
* @param separator the statement separator in the SQL script (typically ";")
* @param blockCommentEndDelimiter the end block comment delimiter
* @return a {@code String} containing the script lines
* @throws IOException in case of I/O errors
* @since 5.2
* @deprecated as of Spring Framework 5.2.16 with no plans for replacement.
* This is an internal API and will likely be removed in Spring Framework 6.0.
*/
@Deprecated
public static String readScript(LineNumberReader lineNumberReader, String[] commentPrefixes,
String separator, String blockCommentEndDelimiter) throws IOException {
String currentStatement = lineNumberReader.readLine();
StringBuilder scriptBuilder = new StringBuilder();
while (currentStatement != null) {
if ((blockCommentEndDelimiter != null && currentStatement.contains(blockCommentEndDelimiter)) ||
(commentPrefixes != null && !startsWithAny(currentStatement, commentPrefixes, 0))) {
if (scriptBuilder.length() > 0) {
scriptBuilder.append('\n');
}
scriptBuilder.append(currentStatement);
}
currentStatement = lineNumberReader.readLine();
}
appendSeparatorToScriptIfNecessary(scriptBuilder, separator);
return scriptBuilder.toString();
}
private static void appendSeparatorToScriptIfNecessary(StringBuilder scriptBuilder, String separator) {
if (separator == null) {
return;
}
String trimmed = separator.trim();
if (trimmed.length() == separator.length()) {
return;
}
// separator ends in whitespace, so we might want to see if the script is trying
// to end the same way
if (scriptBuilder.lastIndexOf(trimmed) == scriptBuilder.length() - trimmed.length()) {
scriptBuilder.append(separator.substring(trimmed.length()));
}
}
/**
* Determine if the provided SQL script contains the specified statement separator.
*
This method is intended to be used to find the string separating each
* SQL statement — for example, a ';' character.
*
Any occurrence of the separator within the script will be ignored if it
* is within a literal block of text enclosed in single quotes
* ({@code '}) or double quotes ({@code "}), if it is escaped with a backslash
* ({@code \}), or if it is within a single-line comment or block comment.
*
* @param resource the resource from which the script was read, or {@code null}
* if unknown
* @param script the SQL script to search within
* @param separator the statement separator to search for
* @param commentPrefixes the prefixes that identify single-line comments
* (typically {@code "--"})
* @param blockCommentStartDelimiter the start block comment delimiter
* (typically {@code "/*"})
* @param blockCommentEndDelimiter the end block comment delimiter
* (typically "*/")
* @since 5.2.16
*/
private static boolean containsStatementSeparator( Reader resource, String script,
String separator, String[] commentPrefixes, String blockCommentStartDelimiter,
String blockCommentEndDelimiter) {
boolean inSingleQuote = false;
boolean inDoubleQuote = false;
boolean inEscape = false;
for (int i = 0; i < script.length(); i++) {
char c = script.charAt(i);
if (inEscape) {
inEscape = false;
continue;
}
// MySQL style escapes
if (c == '\\') {
inEscape = true;
continue;
}
if (!inDoubleQuote && (c == '\'')) {
inSingleQuote = !inSingleQuote;
} else if (!inSingleQuote && (c == '"')) {
inDoubleQuote = !inDoubleQuote;
}
if (!inSingleQuote && !inDoubleQuote) {
if (script.startsWith(separator, i)) {
return true;
} else if (startsWithAny(script, commentPrefixes, i)) {
// Skip over any content from the start of the comment to the EOL
int indexOfNextNewline = script.indexOf('\n', i);
if (indexOfNextNewline > i) {
i = indexOfNextNewline;
continue;
} else {
// If there's no EOL, we must be at the end of the script, so stop here.
break;
}
} else if (script.startsWith(blockCommentStartDelimiter, i)) {
// Skip over any block comments
int indexOfCommentEnd = script.indexOf(blockCommentEndDelimiter, i);
if (indexOfCommentEnd > i) {
i = indexOfCommentEnd + blockCommentEndDelimiter.length() - 1;
continue;
} else {
throw new DdlException(
buildMessage("Missing block comment end delimiter: " + blockCommentEndDelimiter, resource));
}
}
}
}
return false;
}
public static String buildMessage(String message, Reader resource) {
return String.format("Failed to parse SQL script from resource [%s]: %s",
(resource == null ? "" : resource), message);
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator character. Each individual statement will be added to the
* provided {@code List}.
* Within the script, {@value #DEFAULT_COMMENT_PREFIX} will be used as the
* comment prefix; any text beginning with the comment prefix and extending to
* the end of the line will be omitted from the output. Similarly,
* {@value #DEFAULT_BLOCK_COMMENT_START_DELIMITER} and
* {@value #DEFAULT_BLOCK_COMMENT_END_DELIMITER} will be used as the
* start and end block comment delimiters: any text enclosed
* in a block comment will be omitted from the output. In addition, multiple
* adjacent whitespace characters will be collapsed into a single space.
*
* @param script the SQL script
* @param separator character separating each statement (typically a ';')
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* @see #splitSqlScript(String, String, List)
* @see #splitSqlScript(Reader, String, String, String, String, String, List)
* @deprecated as of Spring Framework 5.2.16 with no plans for replacement.
* This is an internal API and will likely be removed in Spring Framework 6.0.
*/
public static void splitSqlScript(String script, char separator, List statements) throws ScriptException {
splitSqlScript(script, String.valueOf(separator), statements);
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator string. Each individual statement will be added to the
* provided {@code List}.
* Within the script, {@value #DEFAULT_COMMENT_PREFIX} will be used as the
* comment prefix; any text beginning with the comment prefix and extending to
* the end of the line will be omitted from the output. Similarly,
* {@value #DEFAULT_BLOCK_COMMENT_START_DELIMITER} and
* {@value #DEFAULT_BLOCK_COMMENT_END_DELIMITER} will be used as the
* start and end block comment delimiters: any text enclosed
* in a block comment will be omitted from the output. In addition, multiple
* adjacent whitespace characters will be collapsed into a single space.
*
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* @see #splitSqlScript(String, char, List)
* @see #splitSqlScript(Reader, String, String, String, String, String, List)
* @deprecated as of Spring Framework 5.2.16 with no plans for replacement.
* This is an internal API and will likely be removed in Spring Framework 6.0.
*/
@Deprecated
public static void splitSqlScript(String script, String separator, List statements) throws ScriptException {
splitSqlScript(null, script, separator, DEFAULT_COMMENT_PREFIX, DEFAULT_BLOCK_COMMENT_START_DELIMITER,
DEFAULT_BLOCK_COMMENT_END_DELIMITER, statements);
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator string. Each individual statement will be added to the provided
* {@code List}.
* Within the script, the provided {@code commentPrefix} will be honored:
* any text beginning with the comment prefix and extending to the end of the
* line will be omitted from the output. Similarly, the provided
* {@code blockCommentStartDelimiter} and {@code blockCommentEndDelimiter}
* delimiters will be honored: any text enclosed in a block comment will be
* omitted from the output. In addition, multiple adjacent whitespace characters
* will be collapsed into a single space.
*
* @param resource the resource from which the script was read
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param commentPrefix the prefix that identifies SQL line comments
* (typically "--")
* @param blockCommentStartDelimiter the start block comment delimiter;
* never {@code null} or empty
* @param blockCommentEndDelimiter the end block comment delimiter;
* never {@code null} or empty
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* @deprecated as of Spring Framework 5.2.16 with no plans for replacement.
* This is an internal API and will likely be removed in Spring Framework 6.0.
*/
@Deprecated
public static void splitSqlScript( Reader resource, String script,
String separator, String commentPrefix, String blockCommentStartDelimiter,
String blockCommentEndDelimiter, List statements) throws ScriptException {
Assert.notBlank(commentPrefix, "'commentPrefix' must not be null or empty");
splitSqlScript(resource, script, separator, new String[]{commentPrefix},
blockCommentStartDelimiter, blockCommentEndDelimiter, statements);
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator string. Each individual statement will be added to the provided
* {@code List}.
* Within the script, the provided {@code commentPrefixes} will be honored:
* any text beginning with one of the comment prefixes and extending to the
* end of the line will be omitted from the output. Similarly, the provided
* {@code blockCommentStartDelimiter} and {@code blockCommentEndDelimiter}
* delimiters will be honored: any text enclosed in a block comment will be
* omitted from the output. In addition, multiple adjacent whitespace characters
* will be collapsed into a single space.
*
* @param resource the resource from which the script was read
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param commentPrefixes the prefixes that identify SQL line comments
* (typically "--")
* @param blockCommentStartDelimiter the start block comment delimiter;
* never {@code null} or empty
* @param blockCommentEndDelimiter the end block comment delimiter;
* never {@code null} or empty
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* @since 5.2
* @deprecated as of Spring Framework 5.2.16 with no plans for replacement.
* This is an internal API and will likely be removed in Spring Framework 6.0.
*/
@Deprecated
public static void splitSqlScript( Reader resource, String script,
String separator, String[] commentPrefixes, String blockCommentStartDelimiter,
String blockCommentEndDelimiter, List statements) {
Assert.notBlank(script, "'script' must not be null or empty");
Assert.notNull(separator, "'separator' must not be null");
Assert.notEmpty(commentPrefixes, "'commentPrefixes' must not be null or empty");
for (String commentPrefix : commentPrefixes) {
Assert.notBlank(commentPrefix, "'commentPrefixes' must not contain null or empty elements");
}
Assert.notBlank(blockCommentStartDelimiter, "'blockCommentStartDelimiter' must not be null or empty");
Assert.notBlank(blockCommentEndDelimiter, "'blockCommentEndDelimiter' must not be null or empty");
StringBuilder sb = new StringBuilder();
boolean inSingleQuote = false;
boolean inDoubleQuote = false;
boolean inEscape = false;
for (int i = 0; i < script.length(); i++) {
char c = script.charAt(i);
if (inEscape) {
inEscape = false;
sb.append(c);
continue;
}
// MySQL style escapes
if (c == '\\') {
inEscape = true;
sb.append(c);
continue;
}
if (!inDoubleQuote && (c == '\'')) {
inSingleQuote = !inSingleQuote;
} else if (!inSingleQuote && (c == '"')) {
inDoubleQuote = !inDoubleQuote;
}
if (!inSingleQuote && !inDoubleQuote) {
if (script.startsWith(separator, i)) {
// We've reached the end of the current statement
if (sb.length() > 0) {
statements.add(sb.toString());
sb = new StringBuilder();
}
i += separator.length() - 1;
continue;
} else if (startsWithAny(script, commentPrefixes, i)) {
// Skip over any content from the start of the comment to the EOL
int indexOfNextNewline = script.indexOf('\n', i);
if (indexOfNextNewline > i) {
i = indexOfNextNewline;
continue;
} else {
// If there's no EOL, we must be at the end of the script, so stop here.
break;
}
} else if (script.startsWith(blockCommentStartDelimiter, i)) {
// Skip over any block comments
int indexOfCommentEnd = script.indexOf(blockCommentEndDelimiter, i);
if (indexOfCommentEnd > i) {
i = indexOfCommentEnd + blockCommentEndDelimiter.length() - 1;
continue;
} else {
throw new DdlException(
buildMessage("Missing block comment end delimiter: " + blockCommentEndDelimiter, resource));
}
} else if (c == ' ' || c == '\r' || c == '\n' || c == '\t') {
// Avoid multiple adjacent whitespace characters
if (sb.length() > 0 && sb.charAt(sb.length() - 1) != ' ') {
c = ' ';
} else {
continue;
}
}
}
sb.append(c);
}
if (StrUtil.isNotBlank(sb)) {
statements.add(sb.toString());
}
}
private static boolean startsWithAny(String script, String[] prefixes, int offset) {
for (String prefix : prefixes) {
if (script.startsWith(prefix, offset)) {
return true;
}
}
return false;
}
}