Automated cleanup: suboptimal string handling (thanks IntelliJ)

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/H2LegacyDialect.java

@@ -728,7 +728,7 @@ public class H2LegacyDialect extends Dialect {
 					if ( idx > 0 ) {
 						String constraintName = message.substring( idx + "violation: ".length() );
 						if ( sqle.getSQLState().equals( "23506" ) ) {
-							constraintName = constraintName.substring( 1, constraintName.indexOf( ":" ) );
+							constraintName = constraintName.substring( 1, constraintName.indexOf( ':' ) );
 						}
 						return constraintName;
 					}

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/SQLServerLegacyDialect.java

@@ -677,7 +677,7 @@ public class SQLServerLegacyDialect extends AbstractTransactSQLDialect {
 		final StringBuilder buffer = new StringBuilder(
 				sql.length() + hints.length() + 12
 		);
-		final int pos = sql.indexOf( ";" );
+		final int pos = sql.indexOf( ';' );
 		if ( pos > -1 ) {
 			buffer.append( sql, 0, pos );
 		}

hibernate-core/src/main/java/org/hibernate/boot/model/process/internal/InferredBasicValueResolver.java

@@ -256,7 +256,7 @@ public class InferredBasicValueResolver {
 
 		if ( jdbcMapping == null ) {
 			throw new MappingException(
-					"Could not determine JavaType nor JdbcType to use" + "" +
+					"Could not determine JavaType nor JdbcType to use" +
 							" for " + ( (BasicValue) stdIndicators ).getResolvedJavaType() +
 							"; table = " + table.getName() +
 							"; column = " + selectable.getText()

hibernate-core/src/main/java/org/hibernate/boot/query/SqlResultSetMappingDescriptor.java

@@ -407,7 +407,7 @@ public class SqlResultSetMappingDescriptor implements NamedResultSetMappingDescr
 			}
 			else if( subPart instanceof EmbeddedAttributeMapping ){
 				final ModelPart subPart1 = ( (EmbeddedAttributeMapping) subPart ).findSubPart( propertyPath.substring(
-						propertyPath.indexOf( "." ) + 1), null );
+						propertyPath.indexOf( '.' ) + 1), null );
 				return getFetchMemento( navigablePath,subPart1 );
 			}
 			throw new UnsupportedOperationException(

hibernate-core/src/main/java/org/hibernate/dialect/H2Dialect.java

@@ -734,7 +734,7 @@ public class H2Dialect extends Dialect {
 					if ( idx > 0 ) {
 						String constraintName = message.substring( idx + "violation: ".length() );
 						if ( sqle.getSQLState().equals( "23506" ) ) {
-							constraintName = constraintName.substring( 1, constraintName.indexOf( ":" ) );
+							constraintName = constraintName.substring( 1, constraintName.indexOf( ':' ) );
 						}
 						return constraintName;
 					}

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQLDialect.java

@@ -405,15 +405,13 @@ public class PostgreSQLDialect extends Dialect {
 			separator = ",";
 		}
 		type.append( ')' );
-		StringBuilder cast1 = new StringBuilder();
-		cast1.append("create cast (varchar as " )
-				.append( name )
-				.append( ") with inout as implicit" );
-		StringBuilder cast2 = new StringBuilder();
-		cast2.append("create cast (" )
-				.append( name )
-				.append( " as varchar) with inout as implicit" );
-		return new String[] { type.toString(), cast1.toString(), cast2.toString() };
+		String cast1 = "create cast (varchar as " +
+				name +
+				") with inout as implicit";
+		String cast2 = "create cast (" +
+				name +
+				" as varchar) with inout as implicit";
+		return new String[] { type.toString(), cast1, cast2 };
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/SQLServerDialect.java

@@ -670,7 +670,7 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 		final StringBuilder buffer = new StringBuilder(
 				sql.length() + hints.length() + 12
 		);
-		final int pos = sql.indexOf( ";" );
+		final int pos = sql.indexOf( ';' );
 		if ( pos > -1 ) {
 			buffer.append( sql, 0, pos );
 		}

hibernate-core/src/main/java/org/hibernate/dialect/aggregate/OracleAggregateSupport.java

@@ -111,7 +111,7 @@ public class OracleAggregateSupport extends AggregateSupportImpl {
 							case BIGINT:
 								return template.replace(
 										placeholder,
-										"" + aggregateParentReadExpression + "." + column + ".number()"
+										aggregateParentReadExpression + "." + column + ".number()"
 								);
 							case DATE:
 								return template.replace(

hibernate-core/src/main/java/org/hibernate/dialect/hint/IndexQueryHintHandler.java

@@ -34,12 +34,11 @@ public class IndexQueryHintHandler implements QueryHintHandler {
 			String startToken = matcher.group( 1 );
 			String endToken = matcher.group( 2 );
 
-			return new StringBuilder( startToken )
-					.append( " use index (" )
-					.append( hints )
-					.append( ") " )
-					.append( endToken )
-					.toString();
+			return startToken +
+					" use index (" +
+					hints +
+					") " +
+					endToken;
 		}
 		else {
 			return query;

hibernate-core/src/main/java/org/hibernate/dialect/pagination/Oracle12LimitHandler.java

@@ -85,7 +85,7 @@ public class Oracle12LimitHandler extends AbstractLimitHandler {
 		}
 		offsetFetchLength = sql.length() + offsetFetchString.length();
 
-		return new StringBuilder( offsetFetchLength ).append( sql ).append( offsetFetchString ).toString();
+		return sql + offsetFetchString;
 	}
 
 	protected String processSql(String sql, int forUpdateIndex, boolean hasFirstRow) {
@@ -136,7 +136,7 @@ public class Oracle12LimitHandler extends AbstractLimitHandler {
 	private int getForUpdateIndex(String sql) {
 		final int forUpdateLastIndex = sql.toLowerCase( Locale.ROOT ).lastIndexOf( "for update" );
 		// We need to recognize cases like : select a from t where b = 'for update';
-		final int lastIndexOfQuote = sql.lastIndexOf( "'" );
+		final int lastIndexOfQuote = sql.lastIndexOf( '\'' );
 		if ( forUpdateLastIndex > -1 ) {
 			if ( lastIndexOfQuote == -1 ) {
 				return forUpdateLastIndex;

hibernate-core/src/main/java/org/hibernate/metamodel/mapping/internal/MappingModelCreationHelper.java

@@ -857,7 +857,7 @@ public class MappingModelCreationHelper {
 		}
 
 		if ( referencedPropertyName != null  ) {
-			if ( referencedPropertyName.indexOf( "." ) > 0 ) {
+			if ( referencedPropertyName.indexOf( '.' ) > 0 ) {
 				return interpretNestedToOneKeyDescriptor(
 						referencedEntityDescriptor,
 						referencedPropertyName,

hibernate-core/src/main/java/org/hibernate/query/hql/internal/StandardHqlTranslator.java

@@ -172,7 +172,7 @@ public class StandardHqlTranslator implements HqlTranslator {
 			errorText += ", ";
 		}
 		if ( e instanceof NoViableAltException ) {
-			errorText +=  message.substring( 0, message.indexOf("'") );
+			errorText +=  message.substring( 0, message.indexOf( '\'' ) );
 			if ( hql.isEmpty() ) {
 				errorText += "'*' (empty query string)";
 			}

hibernate-core/src/main/java/org/hibernate/sql/Template.java

@@ -130,12 +130,10 @@ public final class Template {
 		// 		which the tokens occur.  Depending on the state of those flags we decide whether we need to qualify
 		//		identifier references.
 
-		String symbols = new StringBuilder()
-				.append( PUNCTUATION )
-				.append( WHITESPACE )
-				.append( dialect.openQuote() )
-				.append( dialect.closeQuote() )
-				.toString();
+		String symbols = PUNCTUATION +
+				WHITESPACE +
+				dialect.openQuote() +
+				dialect.closeQuote();
 		StringTokenizer tokens = new StringTokenizer( sqlWhereString, symbols, true );
 		StringBuilder result = new StringBuilder();
 

hibernate-core/src/main/java/org/hibernate/sql/ast/spi/AbstractSqlAstTranslator.java

@@ -8186,7 +8186,7 @@ public abstract class AbstractSqlAstTranslator<T extends JdbcOperation> implemen
 		int lastEnd = 0;
 
 		for ( ColumnValueParameter parameter : columnWriteFragment.getParameters() ) {
-			final int markerStart = sqlFragment.indexOf( "?", lastEnd );
+			final int markerStart = sqlFragment.indexOf( '?', lastEnd );
 
 			// append the part of the fragment from the last-end position (start of string for first pass)
 			// to the index of the parameter marker

hibernate-core/src/main/java/org/hibernate/stat/internal/CacheRegionStatisticsImpl.java

@@ -87,15 +87,15 @@ public class CacheRegionStatisticsImpl implements CacheRegionStatistics, Seriali
 
 	@Override
 	public String toString() {
-		StringBuilder buf = new StringBuilder().append( "CacheRegionStatistics" )
-				.append( "[region=").append( region.getName() )
-				.append( ",hitCount=").append( this.hitCount )
-				.append( ",missCount=").append( this.missCount )
-				.append( ",putCount=").append( this.putCount )
-				.append( ",elementCountInMemory=" ).append( this.getElementCountInMemory() )
-				.append( ",elementCountOnDisk=" ).append( this.getElementCountOnDisk() )
-				.append( ",sizeInMemory=" ).append( this.getSizeInMemory() )
-				.append( ']' );
-		return buf.toString();
+		String buf = "CacheRegionStatistics" +
+				"[region=" + region.getName() +
+				",hitCount=" + this.hitCount +
+				",missCount=" + this.missCount +
+				",putCount=" + this.putCount +
+				",elementCountInMemory=" + this.getElementCountInMemory() +
+				",elementCountOnDisk=" + this.getElementCountOnDisk() +
+				",sizeInMemory=" + this.getSizeInMemory() +
+				']';
+		return buf;
 	}
 }

hibernate-core/src/main/java/org/hibernate/stat/internal/SessionStatisticsImpl.java

@@ -40,12 +40,10 @@ public class SessionStatisticsImpl implements SessionStatistics {
 	}
 	
 	public String toString() {
-		return new StringBuilder()
-			.append("SessionStatistics[")
-			.append("entity count=").append( getEntityCount() )
-			.append(",collection count=").append( getCollectionCount() )
-			.append(']')
-			.toString();
+		return "SessionStatistics[" +
+				"entity count=" + getEntityCount() +
+				",collection count=" + getCollectionCount() +
+				']';
 	}
 
 }

hibernate-envers/src/main/java/org/hibernate/envers/internal/tools/StringTools.java

@@ -32,7 +32,7 @@ public abstract class StringTools {
 		if ( s == null ) {
 			return null;
 		}
-		final int lastDot = s.lastIndexOf( "." );
+		final int lastDot = s.lastIndexOf( '.' );
 		if ( lastDot == -1 ) {
 			return s;
 		}

tooling/metamodel-generator/src/main/java/org/hibernate/jpamodelgen/ImportContextImpl.java

@@ -127,7 +127,7 @@ public class ImportContextImpl implements ImportContext {
 	}
 
 	private boolean inDefaultPackage(String className) {
-		return className.indexOf( "." ) < 0;
+		return className.indexOf( '.' ) < 0;
 	}
 
 	private boolean isPrimitive(String className) {
@@ -175,7 +175,7 @@ public class ImportContextImpl implements ImportContext {
 	}
 
 	public static String qualifier(String qualifiedName) {
-		int loc = qualifiedName.lastIndexOf( "." );
+		int loc = qualifiedName.lastIndexOf( '.' );
 		return ( loc < 0 ) ? "" : qualifiedName.substring( 0, loc );
 	}
 }