Java Code Examples for javax.el.ELResolver#getValue()
The following examples show how to use
javax.el.ELResolver#getValue() .
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Example 1
| Source File: AstValue.java From Tomcat7.0.67 with Apache License 2.0 | 5 votes |
|
@Override
public Object getValue(EvaluationContext ctx) throws ELException {
Object base = this.children[0].getValue(ctx);
int propCount = this.jjtGetNumChildren();
int i = 1;
Object suffix = null;
ELResolver resolver = ctx.getELResolver();
while (base != null && i < propCount) {
suffix = this.children[i].getValue(ctx);
if (i + 1 < propCount &&
(this.children[i+1] instanceof AstMethodParameters)) {
AstMethodParameters mps =
(AstMethodParameters) this.children[i+1];
// This is a method
Object[] paramValues = mps.getParameters(ctx);
base = resolver.invoke(ctx, base, suffix,
getTypesFromValues(paramValues), paramValues);
i+=2;
} else {
// This is a property
if (suffix == null) {
return null;
}
ctx.setPropertyResolved(false);
base = resolver.getValue(ctx, base, suffix);
i++;
}
}
if (!ctx.isPropertyResolved()) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.resolver.unhandled", base, suffix));
}
return base;
}
Example 2
| Source File: AstValue.java From tomcatsrc with Apache License 2.0 | 5 votes |
|
@Override
public Object getValue(EvaluationContext ctx) throws ELException {
Object base = this.children[0].getValue(ctx);
int propCount = this.jjtGetNumChildren();
int i = 1;
Object suffix = null;
ELResolver resolver = ctx.getELResolver();
while (base != null && i < propCount) {
suffix = this.children[i].getValue(ctx);
if (i + 1 < propCount &&
(this.children[i+1] instanceof AstMethodParameters)) {
AstMethodParameters mps =
(AstMethodParameters) this.children[i+1];
// This is a method
Object[] paramValues = mps.getParameters(ctx);
base = resolver.invoke(ctx, base, suffix,
getTypesFromValues(paramValues), paramValues);
i+=2;
} else {
// This is a property
if (suffix == null) {
return null;
}
ctx.setPropertyResolved(false);
base = resolver.getValue(ctx, base, suffix);
i++;
}
}
if (!ctx.isPropertyResolved()) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.resolver.unhandled", base, suffix));
}
return base;
}
Example 3
| Source File: VariableResolverImpl.java From packagedrone with Eclipse Public License 1.0 | 5 votes |
|
/**
* Resolves the specified variable within the given context.
* Returns null if the variable is not found.
**/
public Object resolveVariable (String pName)
throws javax.servlet.jsp.el.ELException {
ELContext elContext = pageContext.getELContext();
ELResolver elResolver = elContext.getELResolver();
try {
return elResolver.getValue(elContext, null, pName);
} catch (javax.el.ELException ex) {
throw new javax.servlet.jsp.el.ELException();
}
}
Example 4
| Source File: AstValue.java From Tomcat8-Source-Read with MIT License | 4 votes |
|
private final Target getTarget(EvaluationContext ctx) throws ELException {
// evaluate expr-a to value-a
Object base = this.children[0].getValue(ctx);
// if our base is null (we know there are more properties to evaluate)
if (base == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.base", this.children[0].getImage()));
}
// set up our start/end
Object property = null;
int propCount = this.jjtGetNumChildren();
int i = 1;
// Evaluate any properties or methods before our target
ELResolver resolver = ctx.getELResolver();
while (i < propCount) {
if (i + 2 < propCount &&
this.children[i + 1] instanceof AstMethodParameters) {
// Method call not at end of expression
base = resolver.invoke(ctx, base,
this.children[i].getValue(ctx), null,
((AstMethodParameters)
this.children[i + 1]).getParameters(ctx));
i += 2;
} else if (i + 2 == propCount &&
this.children[i + 1] instanceof AstMethodParameters) {
// Method call at end of expression
ctx.setPropertyResolved(false);
property = this.children[i].getValue(ctx);
i += 2;
if (property == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.property", property));
}
} else if (i + 1 < propCount) {
// Object with property not at end of expression
property = this.children[i].getValue(ctx);
ctx.setPropertyResolved(false);
base = resolver.getValue(ctx, base, property);
i++;
} else {
// Object with property at end of expression
ctx.setPropertyResolved(false);
property = this.children[i].getValue(ctx);
i++;
if (property == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.property", property));
}
}
if (base == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.property", property));
}
}
Target t = new Target();
t.base = base;
t.property = property;
return t;
}
Example 5
| Source File: AstValue.java From Tomcat8-Source-Read with MIT License | 4 votes |
|
@Override
public Object getValue(EvaluationContext ctx) throws ELException {
Object base = this.children[0].getValue(ctx);
int propCount = this.jjtGetNumChildren();
int i = 1;
Object suffix = null;
ELResolver resolver = ctx.getELResolver();
while (base != null && i < propCount) {
suffix = this.children[i].getValue(ctx);
if (i + 1 < propCount &&
(this.children[i+1] instanceof AstMethodParameters)) {
AstMethodParameters mps =
(AstMethodParameters) this.children[i+1];
if (base instanceof Optional && "orElseGet".equals(suffix) &&
mps.jjtGetNumChildren() == 1) {
Node paramFoOptional = mps.jjtGetChild(0);
if (!(paramFoOptional instanceof AstLambdaExpression ||
paramFoOptional instanceof LambdaExpression)) {
throw new ELException(MessageFactory.get(
"stream.optional.paramNotLambda", suffix));
}
}
// This is a method
Object[] paramValues = mps.getParameters(ctx);
base = resolver.invoke(ctx, base, suffix,
getTypesFromValues(paramValues), paramValues);
i+=2;
} else {
// This is a property
if (suffix == null) {
return null;
}
ctx.setPropertyResolved(false);
base = resolver.getValue(ctx, base, suffix);
i++;
}
}
if (!ctx.isPropertyResolved()) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.resolver.unhandled", base, suffix));
}
return base;
}
Example 6
| Source File: AstValue.java From Tomcat7.0.67 with Apache License 2.0 | 4 votes |
|
private final Target getTarget(EvaluationContext ctx) throws ELException {
// evaluate expr-a to value-a
Object base = this.children[0].getValue(ctx);
// if our base is null (we know there are more properties to evaluate)
if (base == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.base", this.children[0].getImage()));
}
// set up our start/end
Object property = null;
int propCount = this.jjtGetNumChildren();
int i = 1;
// Evaluate any properties or methods before our target
ELResolver resolver = ctx.getELResolver();
while (i < propCount) {
if (i + 2 < propCount &&
this.children[i + 1] instanceof AstMethodParameters) {
// Method call not at end of expression
base = resolver.invoke(ctx, base,
this.children[i].getValue(ctx), null,
((AstMethodParameters)
this.children[i + 1]).getParameters(ctx));
i += 2;
} else if (i + 2 == propCount &&
this.children[i + 1] instanceof AstMethodParameters) {
// Method call at end of expression
ctx.setPropertyResolved(false);
property = this.children[i].getValue(ctx);
i += 2;
if (property == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.property", property));
}
} else if (i + 1 < propCount) {
// Object with property not at end of expression
property = this.children[i].getValue(ctx);
ctx.setPropertyResolved(false);
base = resolver.getValue(ctx, base, property);
i++;
} else {
// Object with property at end of expression
ctx.setPropertyResolved(false);
property = this.children[i].getValue(ctx);
i++;
if (property == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.property", property));
}
}
if (base == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.property", property));
}
}
Target t = new Target();
t.base = base;
t.property = property;
return t;
}
Example 7
| Source File: AstValue.java From tomcatsrc with Apache License 2.0 | 4 votes |
|
private final Target getTarget(EvaluationContext ctx) throws ELException {
// evaluate expr-a to value-a
Object base = this.children[0].getValue(ctx);
// if our base is null (we know there are more properties to evaluate)
if (base == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.base", this.children[0].getImage()));
}
// set up our start/end
Object property = null;
int propCount = this.jjtGetNumChildren();
int i = 1;
// Evaluate any properties or methods before our target
ELResolver resolver = ctx.getELResolver();
while (i < propCount) {
if (i + 2 < propCount &&
this.children[i + 1] instanceof AstMethodParameters) {
// Method call not at end of expression
base = resolver.invoke(ctx, base,
this.children[i].getValue(ctx), null,
((AstMethodParameters)
this.children[i + 1]).getParameters(ctx));
i += 2;
} else if (i + 2 == propCount &&
this.children[i + 1] instanceof AstMethodParameters) {
// Method call at end of expression
ctx.setPropertyResolved(false);
property = this.children[i].getValue(ctx);
i += 2;
if (property == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.property", property));
}
} else if (i + 1 < propCount) {
// Object with property not at end of expression
property = this.children[i].getValue(ctx);
ctx.setPropertyResolved(false);
base = resolver.getValue(ctx, base, property);
i++;
} else {
// Object with property at end of expression
ctx.setPropertyResolved(false);
property = this.children[i].getValue(ctx);
i++;
if (property == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.property", property));
}
}
if (base == null) {
throw new PropertyNotFoundException(MessageFactory.get(
"error.unreachable.property", property));
}
}
Target t = new Target();
t.base = base;
t.property = property;
return t;
}
Example 8
| Source File: TestScopedAttributeELResolverPerformance.java From Tomcat8-Source-Read with MIT License | 3 votes |
|
@Test
public void testGetValuePerformance() throws Exception {
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
context.putContext(JspContext.class, new TesterPageContext());
ELResolver resolver = new ScopedAttributeELResolver();
for (int i = 0; i < 100000; i++) {
resolver.getValue(context, null, "unknown");
}
}
