Enhance IncorrectResultSizeDataAccessException message details.

Author: mhyeon-lee

spring-data-jdbc-plus-sql/src/main/java/com/navercorp/spring/data/jdbc/plus/sql/support/JdbcDaoSupport.java

@@ -291,7 +291,15 @@ protected <R> Optional<R> selectOne(String sql, SqlParameterSource params, RowMa
 		}
 
 		if (list.size() > 1) {
-			throw new IncorrectResultSizeDataAccessException(1, list.size());
+			String message = new StringBuilder()
+				.append("Result size must be one or zero for findOne operation. result size: ")
+				.append(list.size())
+				.append(", sql: ")
+				.append(sql)
+				.append(", params:")
+				.append(params.toString())
+				.toString();
+			throw new IncorrectResultSizeDataAccessException(message, 1, list.size());
 		}
 		return Optional.ofNullable(list.get(0));
 	}

spring-data-jdbc-plus-sql/src/main/java/com/navercorp/spring/data/jdbc/plus/sql/support/JdbcRepositorySupport.java

@@ -383,7 +383,15 @@ protected <R> Optional<R> findOne(String sql, SqlParameterSource params, RowMapp
 		}
 
 		if (list.size() > 1) {
-			throw new IncorrectResultSizeDataAccessException(1, list.size());
+			String message = new StringBuilder()
+				.append("Result size must be one or zero for findOne operation. result size: ")
+				.append(list.size())
+				.append(", sql: ")
+				.append(sql)
+				.append(", params:")
+				.append(params.toString())
+				.toString();
+			throw new IncorrectResultSizeDataAccessException(message, 1, list.size());
 		}
 		return Optional.ofNullable(this.triggerAfterLoad(list.get(0)));
 	}

spring-jdbc-plus-support/src/main/java/com/navercorp/spring/jdbc/plus/support/parametersource/CompositeSqlParameterSource.java

@@ -74,4 +74,11 @@ public Object getValue(String paramName) throws IllegalArgumentException {
 		throw new IllegalArgumentException(
 			"Can not find '" + paramName + "' parameter in CompositeSqlParameterSource.");
 	}
+
+	@Override
+	public String toString() {
+		return "CompositeSqlParameterSource{" +
+			"sqlParameterSources=" + sqlParameterSources +
+			'}';
+	}
 }