PostgresSQL regular expression case sensitive match

Author: wumpz

src/main/java/net/sf/jsqlparser/expression/ExpressionVisitor.java

@@ -44,6 +44,7 @@
 import net.sf.jsqlparser.expression.operators.relational.MinorThan;
 import net.sf.jsqlparser.expression.operators.relational.MinorThanEquals;
 import net.sf.jsqlparser.expression.operators.relational.NotEqualsTo;
+import net.sf.jsqlparser.expression.operators.relational.RegExpCaseSensitiveMatch;
 import net.sf.jsqlparser.schema.Column;
 import net.sf.jsqlparser.statement.select.SubSelect;
 
@@ -140,4 +141,6 @@ public interface ExpressionVisitor {
 	void visit(IntervalExpression iexpr);
 
 	void visit(OracleHierarchicalExpression oexpr);
+	
+	void visit(RegExpCaseSensitiveMatch rexpr);
 }

src/main/java/net/sf/jsqlparser/expression/operators/relational/RegExpCaseSensitiveMatch.java

@@ -0,0 +1,38 @@
+/*
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2013 JSQLParser
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as 
+ * published by the Free Software Foundation, either version 2.1 of the 
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Lesser Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Lesser Public 
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ * #L%
+ */
+package net.sf.jsqlparser.expression.operators.relational;
+
+import net.sf.jsqlparser.expression.BinaryExpression;
+import net.sf.jsqlparser.expression.ExpressionVisitor;
+
+public class RegExpCaseSensitiveMatch extends BinaryExpression {
+
+	@Override
+	public void accept(ExpressionVisitor expressionVisitor) {
+		expressionVisitor.visit(this);
+	}
+
+	@Override
+	public String getStringExpression() {
+		return "~";
+	}
+}

src/main/java/net/sf/jsqlparser/util/TablesNamesFinder.java

@@ -73,6 +73,7 @@
 import net.sf.jsqlparser.expression.operators.relational.MinorThanEquals;
 import net.sf.jsqlparser.expression.operators.relational.MultiExpressionList;
 import net.sf.jsqlparser.expression.operators.relational.NotEqualsTo;
+import net.sf.jsqlparser.expression.operators.relational.RegExpCaseSensitiveMatch;
 import net.sf.jsqlparser.schema.Column;
 import net.sf.jsqlparser.schema.Table;
 import net.sf.jsqlparser.statement.delete.Delete;
@@ -506,4 +507,9 @@ public void visit(JdbcNamedParameter jdbcNamedParameter) {
 	@Override
 	public void visit(OracleHierarchicalExpression oexpr) {
 	}
+
+	@Override
+	public void visit(RegExpCaseSensitiveMatch rexpr) {
+		visitBinaryExpression(rexpr);
+	}
 }

src/main/java/net/sf/jsqlparser/util/deparser/ExpressionDeParser.java

@@ -487,4 +487,9 @@ public void visit(JdbcNamedParameter jdbcNamedParameter) {
 	public void visit(OracleHierarchicalExpression oexpr) {
 		buffer.append(oexpr.toString());
 	}
+
+	@Override
+	public void visit(RegExpCaseSensitiveMatch rexpr) {
+		visitBinaryExpression(rexpr, " ~ ");
+	}
 }

src/main/javacc/net/sf/jsqlparser/parser/JSqlParserCC.jj

@@ -98,6 +98,7 @@ import net.sf.jsqlparser.expression.operators.relational.EqualsTo;
 import net.sf.jsqlparser.expression.operators.relational.ExpressionList;
 import net.sf.jsqlparser.expression.operators.relational.GreaterThan;
 import net.sf.jsqlparser.expression.operators.relational.GreaterThanEquals;
+import net.sf.jsqlparser.expression.operators.relational.RegExpCaseSensitiveMatch;
 import net.sf.jsqlparser.expression.operators.relational.InExpression;
 import net.sf.jsqlparser.expression.operators.relational.IsNullExpression;
 import net.sf.jsqlparser.expression.operators.relational.ItemsList;
@@ -1333,6 +1334,7 @@ Expression RegularCondition():
 	| "<=" { result = new MinorThanEquals(); }
 	| ("<>" | "!=") { result = new NotEqualsTo(); }
 	| "@@" { result = new Matches(); }
+	| "~" { result = new RegExpCaseSensitiveMatch(); }
 	)
 	rightExpression=ComparisonItem()
 

src/test/java/net/sf/jsqlparser/test/select/SelectTest.java

@@ -1148,4 +1148,9 @@ public void testOracleHierarchicalQuery3() throws JSQLParserException {
 		String stmt= "SELECT last_name, employee_id, manager_id, LEVEL FROM employees START WITH employee_id = 100 CONNECT BY PRIOR employee_id = manager_id ORDER SIBLINGS BY last_name";
 		assertSqlCanBeParsedAndDeparsed(stmt);
 	}
+	
+	public void testPostgreSQLRegExpCaseSensitiveMatch() throws JSQLParserException {
+		String stmt= "SELECT a, b FROM foo WHERE a ~ '[help].*'";
+		assertSqlCanBeParsedAndDeparsed(stmt);
+	}
 }