ExpressionOp.java
/* Copyright (c) 2001-2024, The HSQL Development Group
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package org.hsqldb;
import org.hsqldb.error.Error;
import org.hsqldb.error.ErrorCode;
import org.hsqldb.lib.ArrayUtil;
import org.hsqldb.lib.List;
import org.hsqldb.map.ValuePool;
import org.hsqldb.types.BinaryData;
import org.hsqldb.types.BinaryType;
import org.hsqldb.types.CharacterType;
import org.hsqldb.types.DateFormat;
import org.hsqldb.types.DateTimeType;
import org.hsqldb.types.IntervalSecondData;
import org.hsqldb.types.Type;
import org.hsqldb.types.Types;
import java.time.format.DateTimeFormatter;
/**
* Implementation of CAST, CASE, LIMIT and ZONE operations.
*
* @author Campbell Burnet (campbell-burnet@users dot sourceforge.net)
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 2.7.3
* @since 1.9.0
*/
public class ExpressionOp extends Expression {
static final ExpressionOp limitOneExpression = new ExpressionOp(
OpTypes.LIMIT,
new ExpressionValue(ValuePool.INTEGER_0, Type.SQL_INTEGER),
new ExpressionValue(ValuePool.INTEGER_1, Type.SQL_INTEGER));
String template;
DateTimeFormatter dateTimeFormatter;
/**
* Creates a multiple arg operation expression
*/
ExpressionOp(int type, Expression[] exprArray) {
super(type);
switch (opType) {
case OpTypes.CONCAT_WS :
nodes = exprArray;
return;
default :
throw Error.runtimeError(ErrorCode.U_S0500, "ExpressionOp");
}
}
/**
* Creates a special binary operation expression
*/
ExpressionOp(int type, Expression left, Expression right) {
super(type);
nodes = new Expression[]{ left, right };
switch (opType) {
case OpTypes.LIKE_ARG :
case OpTypes.ALTERNATIVE :
case OpTypes.CASEWHEN :
case OpTypes.LIMIT :
case OpTypes.ZONE_MODIFIER :
return;
case OpTypes.PREFIX :
dataType = left.dataType;
return;
default :
throw Error.runtimeError(ErrorCode.U_S0500, "ExpressionOp");
}
}
/**
* creates a CAST expression
*/
ExpressionOp(Expression e, Type dataType) {
super(OpTypes.CAST);
nodes = new Expression[]{ e };
this.dataType = dataType;
this.alias = e.alias;
}
/**
* creates a CAST expression with template
* when template is null, it is a simple CAST
*/
ExpressionOp(Expression e, Type dataType, String template) {
super(OpTypes.CAST);
nodes = new Expression[]{ e };
this.dataType = dataType;
this.alias = e.alias;
this.template = template;
}
/**
* creates a special conversion for time / timestamp comparison
*/
ExpressionOp(Expression e) {
super(OpTypes.CAST);
nodes = new Expression[]{ e };
switch (e.dataType.typeCode) {
case Types.SQL_TIME_WITH_TIME_ZONE :
dataType = DateTimeType.getDateTimeType(
Types.SQL_TIME,
e.dataType.scale);
break;
case Types.SQL_TIMESTAMP_WITH_TIME_ZONE :
dataType = DateTimeType.getDateTimeType(
Types.SQL_TIMESTAMP,
e.dataType.scale);
break;
case Types.SQL_TIME :
dataType = DateTimeType.getDateTimeType(
Types.SQL_TIME_WITH_TIME_ZONE,
e.dataType.scale);
break;
case Types.SQL_TIMESTAMP :
dataType = DateTimeType.getDateTimeType(
Types.SQL_TIMESTAMP_WITH_TIME_ZONE,
e.dataType.scale);
break;
default :
throw Error.runtimeError(ErrorCode.U_S0500, "ExpressionOp");
}
this.alias = e.alias;
}
public static Expression getCastExpression(
Session session,
Expression e,
Type dataType) {
if (e.getType() == OpTypes.VALUE) {
Object value = dataType.castToType(
session,
e.getValue(session),
e.getDataType());
return new ExpressionValue(value, dataType);
}
return new ExpressionOp(e, dataType);
}
public static Expression getConvertExpression(
Session session,
Expression e,
Type dataType) {
if (e.getType() == OpTypes.VALUE) {
Object value = dataType.convertToType(
session,
e.getValue(session),
e.getDataType());
return new ExpressionValue(value, dataType);
}
Expression c = new ExpressionOp(e, dataType);
c.opType = OpTypes.CONVERT;
return c;
}
public String getSQL() {
StringBuilder sb = new StringBuilder(64);
String left = getContextSQL(nodes.length > 0
? nodes[LEFT]
: null);
String right = getContextSQL(nodes.length > 1
? nodes[RIGHT]
: null);
switch (opType) {
case OpTypes.VALUE :
if (valueData == null) {
return Tokens.T_NULL;
}
if (dataType == null) {
throw Error.runtimeError(ErrorCode.U_S0500, "ExpressionOp");
}
return dataType.convertToSQLString(valueData);
case OpTypes.LIKE_ARG :
sb.append(' ')
.append(Tokens.T_LIKE)
.append(' ')
.append(left)
.append(' ')
.append(right)
.append(' ');
break;
case OpTypes.CAST :
sb.append(' ')
.append(Tokens.T_CAST)
.append('(')
.append(left)
.append(' ')
.append(Tokens.T_AS)
.append(' ')
.append(dataType.getTypeDefinition());
if (template != null) {
sb.append(' ')
.append(Tokens.T_FORMAT)
.append(' ')
.append('\'')
.append(template)
.append('\'');
}
sb.append(')');
break;
case OpTypes.CONVERT :
sb.append(left);
break;
case OpTypes.CASEWHEN :
sb.append(' ')
.append(Tokens.T_CASEWHEN)
.append('(')
.append(left)
.append(',')
.append(right)
.append(')');
break;
case OpTypes.ALTERNATIVE :
sb.append(left).append(',').append(right);
break;
case OpTypes.LIMIT :
if (left != null) {
sb.append(' ')
.append(Tokens.T_OFFSET)
.append(' ')
.append(left)
.append(' ');
}
if (right != null) {
sb.append(' ')
.append(Tokens.T_FETCH)
.append(' ')
.append(Tokens.T_FIRST)
.append(right)
.append(' ')
.append(right)
.append(' ')
.append(Tokens.T_ROWS)
.append(' ')
.append(Tokens.T_ONLY)
.append(' ');
}
break;
case OpTypes.ZONE_MODIFIER :
sb.append(left).append(' ').append(Tokens.T_AT).append(' ');
if (nodes[RIGHT] == null) {
sb.append(Tokens.T_LOCAL).append(' ');
break;
}
sb.append(Tokens.T_TIME)
.append(' ')
.append(Tokens.T_ZONE)
.append(' ')
.append(right);
break;
case OpTypes.CONCAT_WS :
sb.append(Tokens.T_CONCAT_WS)
.append(Tokens.OPENBRACKET)
.append(left);
for (int i = 0; i < nodes.length; i++) {
sb.append(',').append(nodes[i].getSQL());
}
sb.append(Tokens.CLOSEBRACKET);
break;
default :
throw Error.runtimeError(ErrorCode.U_S0500, "ExpressionOp");
}
return sb.toString();
}
protected String describe(Session session, int blanks) {
StringBuilder sb = new StringBuilder(64);
sb.append('\n');
for (int i = 0; i < blanks; i++) {
sb.append(' ');
}
switch (opType) {
case OpTypes.VALUE :
sb.append("VALUE = ")
.append(dataType.convertToSQLString(valueData))
.append(", TYPE = ")
.append(dataType.getNameString());
return sb.toString();
case OpTypes.LIKE_ARG :
sb.append(Tokens.T_LIKE)
.append(' ')
.append("ARG ")
.append(dataType.getTypeDefinition())
.append(' ');
break;
case OpTypes.VALUELIST :
sb.append(Tokens.T_VALUE).append(' ').append("LIST ");
for (int i = 0; i < nodes.length; i++) {
sb.append(nodes[i].describe(session, blanks + 1))
.append(' ');
}
return sb.toString();
case OpTypes.CAST :
sb.append(Tokens.T_CAST)
.append(' ')
.append(dataType.getTypeDefinition())
.append(' ');
break;
case OpTypes.CONVERT :
sb.append(Tokens.T_CONVERT)
.append(' ')
.append(dataType.getTypeDefinition())
.append(' ');
break;
case OpTypes.CASEWHEN :
sb.append(Tokens.T_CASEWHEN).append(' ');
break;
case OpTypes.CONCAT_WS :
sb.append(Tokens.T_CONCAT_WS).append(' ');
break;
default :
}
if (getLeftNode() != null) {
sb.append(" arg_left=[")
.append(nodes[LEFT].describe(session, blanks + 1))
.append(']');
}
if (getRightNode() != null) {
sb.append(" arg_right=[")
.append(nodes[RIGHT].describe(session, blanks + 1))
.append(']');
}
return sb.toString();
}
public List<Expression> resolveColumnReferences(
Session session,
RangeGroup rangeGroup,
int rangeCount,
RangeGroup[] rangeGroups,
List<Expression> unresolvedSet,
boolean acceptsSequences) {
if (opType == OpTypes.VALUE) {
return unresolvedSet;
}
switch (opType) {
case OpTypes.CASEWHEN :
acceptsSequences = false;
break;
default :
}
for (int i = 0; i < nodes.length; i++) {
if (nodes[i] == null) {
continue;
}
unresolvedSet = nodes[i].resolveColumnReferences(
session,
rangeGroup,
rangeCount,
rangeGroups,
unresolvedSet,
acceptsSequences);
}
return unresolvedSet;
}
public void resolveTypes(Session session, Expression parent) {
switch (opType) {
case OpTypes.CASEWHEN :
break;
default :
for (int i = 0; i < nodes.length; i++) {
if (nodes[i] != null) {
nodes[i].resolveTypes(session, this);
}
}
}
switch (opType) {
case OpTypes.VALUE :
break;
case OpTypes.LIKE_ARG : {
dataType = nodes[LEFT].dataType;
if (nodes[LEFT].opType == OpTypes.VALUE
&& (nodes[RIGHT] == null
|| nodes[RIGHT].opType == OpTypes.VALUE)) {
setAsConstantValue(session, parent);
break;
}
break;
}
case OpTypes.CAST :
case OpTypes.CONVERT : {
Expression node = nodes[LEFT];
Type nodeType = node.dataType;
if (nodeType != null && !dataType.canConvertFrom(nodeType)) {
throw Error.error(ErrorCode.X_42561);
}
if (template == null) {
if (node.opType == OpTypes.VALUE) {
setAsConstantValue(session, parent);
} else if (node.opType == OpTypes.DYNAMIC_PARAM) {
node.dataType = dataType;
}
} else {
if (dataType.isCharacterType()) {
if (node.opType == OpTypes.DYNAMIC_PARAM) {
node.dataType = Type.SQL_TIMESTAMP;
}
if (!node.dataType.isDateTimeType()) {
throw Error.error(ErrorCode.X_42561);
}
dateTimeFormatter = DateFormat.toFormatter(
template,
false);
} else if (dataType.isDateTimeType()) {
if (node.opType == OpTypes.DYNAMIC_PARAM) {
node.dataType = Type.SQL_VARCHAR_DEFAULT;
}
if (!node.dataType.isCharacterType()) {
throw Error.error(ErrorCode.X_42561);
}
dateTimeFormatter = DateFormat.toFormatter(
template,
true);
} else {
throw Error.error(ErrorCode.X_42561);
}
}
break;
}
case OpTypes.ZONE_MODIFIER :
if (nodes[LEFT].dataType == null) {
throw Error.error(ErrorCode.X_42567);
}
if (nodes[RIGHT] != null) {
Type rightDataType = nodes[RIGHT].dataType;
if (rightDataType == null) {
nodes[RIGHT].dataType =
Type.SQL_INTERVAL_HOUR_TO_MINUTE;
} else if (!rightDataType.isCharacterType()
&& rightDataType.typeCode
!= Types.SQL_INTERVAL_HOUR_TO_MINUTE) {
throw Error.error(ErrorCode.X_42563);
}
}
switch (nodes[LEFT].dataType.typeCode) {
case Types.SQL_TIME :
dataType = DateTimeType.getDateTimeType(
Types.SQL_TIME_WITH_TIME_ZONE,
nodes[LEFT].dataType.scale);
break;
case Types.SQL_TIMESTAMP :
dataType = DateTimeType.getDateTimeType(
Types.SQL_TIMESTAMP_WITH_TIME_ZONE,
nodes[LEFT].dataType.scale);
break;
case Types.SQL_TIMESTAMP_WITH_TIME_ZONE :
case Types.SQL_TIME_WITH_TIME_ZONE :
dataType = nodes[LEFT].dataType;
break;
default :
throw Error.error(ErrorCode.X_42563);
}
// no constant optimisation as value dependent on session zone
break;
case OpTypes.CASEWHEN :
// We use CASEWHEN as parent type.
// In the parent, left node is the condition, and right node is
// the leaf, tagged as type ALTERNATIVE; its left node is
// case 1 (how to get the value when the condition in
// the parent evaluates to true), while its right node is case 2
// (how to get the value when the condition in
// the parent evaluates to false).
resolveTypesForCaseWhen(session, parent);
break;
case OpTypes.CONCAT_WS :
for (int i = 0; i < nodes.length; i++) {
nodes[i].dataType = Type.SQL_VARCHAR_DEFAULT;
}
dataType = Type.SQL_VARCHAR_DEFAULT;
break;
case OpTypes.ALTERNATIVE :
resolveTypesForAlternative(session);
break;
case OpTypes.LIMIT :
if (nodes[LEFT] != null) {
if (nodes[LEFT].dataType == null) {
throw Error.error(ErrorCode.X_42567);
}
if (!nodes[LEFT].dataType.isIntegralType()) {
throw Error.error(ErrorCode.X_42563);
}
}
if (nodes[RIGHT] != null) {
if (nodes[RIGHT].dataType == null) {
throw Error.error(ErrorCode.X_42567);
}
if (!nodes[RIGHT].dataType.isIntegralType()) {
throw Error.error(ErrorCode.X_42563);
}
}
break;
case OpTypes.PREFIX :
break;
default :
throw Error.runtimeError(ErrorCode.U_S0500, "ExpressionOp");
}
}
void resolveTypesForAlternative(Session session) {
if (nodes[LEFT].dataType == null) {
nodes[LEFT].dataType = nodes[RIGHT].dataType;
}
if (nodes[RIGHT].dataType == null) {
nodes[RIGHT].dataType = nodes[LEFT].dataType;
}
if (exprSubType == OpTypes.CAST) {
if (nodes[RIGHT].dataType == null) {
nodes[RIGHT].dataType = nodes[LEFT].dataType =
Type.SQL_VARCHAR_DEFAULT;
}
dataType = nodes[RIGHT].dataType;
if (!nodes[RIGHT].dataType.equals(nodes[LEFT].dataType)) {
if (dataType.isCharacterType()) {
dataType = Type.SQL_VARCHAR_DEFAULT;
}
nodes[LEFT] = new ExpressionOp(nodes[LEFT], dataType);
}
} else {
dataType = Type.getAggregateType(nodes[LEFT].dataType, dataType);
dataType = Type.getAggregateType(nodes[RIGHT].dataType, dataType);
}
}
/**
* For CASE WHEN and its special cases section 9.3 of the SQL standard
* on type aggregation is implemented.
*/
void resolveTypesForCaseWhen(Session session, Expression parent) {
nodes[RIGHT].resolveTypes(session, this);
Expression expr = this;
while (expr.opType == OpTypes.CASEWHEN) {
if (expr.exprSubType == OpTypes.CAST) {
dataType = expr.nodes[RIGHT].dataType;
} else {
dataType = Type.getAggregateType(
expr.nodes[RIGHT].dataType,
dataType);
}
if (expr.nodes[RIGHT].nodes[RIGHT].opType == OpTypes.CASEWHEN) {
expr = expr.nodes[RIGHT].nodes[RIGHT];
} else {
expr = expr.nodes[RIGHT].nodes[LEFT];
}
}
expr = this;
while (expr.opType == OpTypes.CASEWHEN) {
if (expr.nodes[RIGHT].dataType == null) {
expr.nodes[RIGHT].dataType = dataType;
}
if (expr.nodes[RIGHT].nodes[RIGHT].dataType == null) {
expr.nodes[RIGHT].nodes[RIGHT].dataType = dataType;
}
if (expr.nodes[RIGHT].nodes[LEFT].dataType == null) {
expr.nodes[RIGHT].nodes[LEFT].dataType = dataType;
}
if (expr.nodes[RIGHT].nodes[RIGHT].opType == OpTypes.CASEWHEN) {
expr = expr.nodes[RIGHT].nodes[RIGHT];
} else {
expr = expr.nodes[RIGHT].nodes[LEFT];
}
}
expr = this;
while (expr.opType == OpTypes.CASEWHEN) {
expr.nodes[LEFT].resolveTypes(session, expr);
if (expr.nodes[LEFT].isUnresolvedParam()) {
expr.nodes[LEFT].dataType = Type.SQL_BOOLEAN;
}
expr.nodes[RIGHT].nodes[LEFT].resolveTypes(
session,
expr.nodes[RIGHT]);
if (expr.nodes[RIGHT].nodes[RIGHT].opType != OpTypes.CASEWHEN) {
expr.nodes[RIGHT].nodes[RIGHT].resolveTypes(
session,
expr.nodes[RIGHT]);
}
expr = expr.nodes[RIGHT].nodes[RIGHT];
}
if (parent == null || parent.opType != OpTypes.ALTERNATIVE) {
if (dataType == null || dataType.typeCode == Types.SQL_ALL_TYPES) {
throw Error.error(ErrorCode.X_42567);
}
}
}
public Object getValue(Session session) {
switch (opType) {
case OpTypes.VALUE :
return valueData;
case OpTypes.LIKE_ARG : {
boolean hasEscape = nodes[RIGHT] != null;
int escapeChar = Integer.MAX_VALUE;
if (dataType.isBinaryType()) {
BinaryData left = (BinaryData) nodes[LEFT].getValue(
session);
if (left == null) {
return null;
}
if (hasEscape) {
BinaryData right = (BinaryData) nodes[RIGHT].getValue(
session);
if (right == null) {
return null;
}
if (right.length(session) != 1) {
throw Error.error(ErrorCode.X_2200D);
}
escapeChar = right.getBytes()[0];
}
byte[] array = left.getBytes();
byte[] newArray = new byte[array.length];
boolean wasEscape = false;
int escapeCount = 0;
int i = 0;
int j = 0;
for (; i < array.length; i++) {
if (array[i] == escapeChar) {
if (wasEscape) {
escapeCount++;
newArray[j++] = array[i];
wasEscape = false;
continue;
}
wasEscape = true;
if (i == array.length - 1) {
throw Error.error(ErrorCode.X_22025);
}
continue;
}
if (array[i] == '_' || array[i] == '%') {
if (wasEscape) {
escapeCount++;
newArray[j++] = array[i];
wasEscape = false;
continue;
}
break;
}
if (wasEscape) {
throw Error.error(ErrorCode.X_22025);
}
newArray[j++] = array[i];
}
newArray = (byte[]) ArrayUtil.resizeArrayIfDifferent(
newArray,
j);
return new BinaryData(newArray, false);
} else {
String left = (String) Type.SQL_VARCHAR.convertToType(
session,
nodes[LEFT].getValue(session),
nodes[LEFT].getDataType());
if (left == null) {
return null;
}
if (hasEscape) {
String right = (String) Type.SQL_VARCHAR.convertToType(
session,
nodes[RIGHT].getValue(session),
nodes[RIGHT].getDataType());
if (right == null) {
return null;
}
if (right.length() != 1) {
throw Error.error(ErrorCode.X_22019);
}
escapeChar = right.charAt(0);
}
char[] array = left.toCharArray();
char[] newArray = new char[array.length];
boolean wasEscape = false;
int escapeCount = 0;
int i = 0;
int j = 0;
for (; i < array.length; i++) {
if (array[i] == escapeChar) {
if (wasEscape) {
escapeCount++;
newArray[j++] = array[i];
wasEscape = false;
continue;
}
wasEscape = true;
if (i == array.length - 1) {
throw Error.error(ErrorCode.X_22025);
}
continue;
}
if (array[i] == '_' || array[i] == '%') {
if (wasEscape) {
escapeCount++;
newArray[j++] = array[i];
wasEscape = false;
continue;
}
break;
}
if (wasEscape) {
throw Error.error(ErrorCode.X_22025);
}
newArray[j++] = array[i];
}
return new String(newArray, 0, j);
}
}
case OpTypes.ORDER_BY :
return nodes[LEFT].getValue(session);
case OpTypes.PREFIX : {
if (nodes[LEFT].dataType.isCharacterType()) {
Object value = nodes[RIGHT].getValue(session);
if (value == null) {
return null;
}
CharacterType type =
(CharacterType) nodes[RIGHT].dataType;
long length = type.size(session, value);
type = (CharacterType) nodes[LEFT].dataType;
value = nodes[LEFT].getValue(session);
if (value == null) {
return null;
}
return type.substring(
session,
value,
0,
length,
true,
false);
} else {
BinaryData value = (BinaryData) nodes[RIGHT].getValue(
session);
if (value == null) {
return null;
}
long length = value.length(session);
BinaryType type = (BinaryType) nodes[LEFT].dataType;
value = (BinaryData) nodes[LEFT].getValue(session);
if (value == null) {
return null;
}
return type.substring(session, value, 0, length, true);
}
}
case OpTypes.CAST : {
Object value;
if (dateTimeFormatter == null) {
value = dataType.castToType(
session,
nodes[LEFT].getValue(session),
nodes[LEFT].dataType);
} else {
if (dataType.isDateTimeType()) {
String string = (String) nodes[LEFT].getValue(session);
value = DateFormat.toDate(
(DateTimeType) dataType,
string,
dateTimeFormatter);
} else {
value = nodes[LEFT].getValue(session);
value = DateFormat.toFormattedDate(
(DateTimeType) nodes[LEFT].dataType,
value,
dateTimeFormatter);
}
}
if (dataType.userTypeModifier != null) {
Constraint[] constraints =
dataType.userTypeModifier.getConstraints();
for (int i = 0; i < constraints.length; i++) {
constraints[i].checkCheckConstraint(
session,
null,
null,
value);
}
}
return value;
}
case OpTypes.CONVERT : {
Object value = dataType.convertToType(
session,
nodes[LEFT].getValue(session),
nodes[LEFT].dataType);
if (dataType.userTypeModifier != null) {
Constraint[] constraints =
dataType.userTypeModifier.getConstraints();
for (int i = 0; i < constraints.length; i++) {
constraints[i].checkCheckConstraint(
session,
null,
null,
value);
}
}
return value;
}
case OpTypes.CASEWHEN : {
Boolean result = (Boolean) nodes[LEFT].getValue(session);
if (Boolean.TRUE.equals(result)) {
return nodes[RIGHT].nodes[LEFT].getValue(session, dataType);
} else {
return nodes[RIGHT].nodes[RIGHT].getValue(
session,
dataType);
}
}
case OpTypes.CONCAT_WS : {
String sep = (String) nodes[LEFT].getValue(session);
if (sep == null) {
return null;
}
StringBuilder sb = new StringBuilder();
boolean hasValue = false;
for (int i = 1; i < nodes.length; i++) {
String value = (String) nodes[i].getValue(session);
if (value == null) {
continue;
}
if (hasValue) {
sb.append(sep);
}
sb.append(value);
hasValue = true;
}
return sb.toString();
}
case OpTypes.ZONE_MODIFIER : {
Object leftValue = nodes[LEFT].getValue(session);
Object rightValue = nodes[RIGHT] == null
? null
: nodes[RIGHT].getValue(session);
if (leftValue == null) {
return null;
}
boolean atLocal = nodes[RIGHT] == null;
if (atLocal) {
return ((DateTimeType) dataType).changeZone(
session,
leftValue,
nodes[LEFT].dataType,
0,
true);
}
if (rightValue == null) {
return null;
}
if (nodes[RIGHT].dataType.isCharacterType()) {
if (DateTimeType.zoneIDs.contains(rightValue)) {
return ((DateTimeType) dataType).changeZone(
session,
leftValue,
nodes[LEFT].dataType,
(String) rightValue);
} else {
rightValue =
Type.SQL_INTERVAL_HOUR_TO_MINUTE.convertToDefaultType(
session,
rightValue);
}
}
long zoneSeconds =
((IntervalSecondData) rightValue).getSeconds();
return ((DateTimeType) dataType).changeZone(
session,
leftValue,
nodes[LEFT].dataType,
(int) zoneSeconds,
false);
}
case OpTypes.LIMIT :
// fall through
default :
throw Error.runtimeError(ErrorCode.U_S0500, "ExpressionOp");
}
}
public boolean equals(Expression other) {
boolean value = super.equals(other);
if (opType == OpTypes.CAST) {
value = value && equals(template, ((ExpressionOp) other).template);
}
return value;
}
}