Mixing
Getter Block execution without VF reference
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My understanding of the Getter Setter is that getter is invoked if the particular variable is being referenced in VF Page.
However for the following code I see that Getter is getting called even if no variable reference is on the page.
public class EmbeddedTest
{
public list<account> lAcc{
get{
system.debug('INSIDE GETTER');
return null;
}
set;
}
public void checkChanges()
{
lAcc=[select id,name from account limit 10];
system.debug('ACCOUNT LOG GENERATED '+lAcc);
}
}
VF Page:
<apex:page controller="EmbeddedTest">
<apex:form >
<apex:commandButton action="{!checkChanges}" value="Click to change!"/>
</apex:form>
</apex:page>
On clicking the button I see the below logs(in order):
08:37:22.0 (14537986)|SOQL_EXECUTE_BEGIN|[19]|Aggregations:0|SELECT
id, name FROM account LIMIT 10
08:37:22.0 (19987384)|SOQL_EXECUTE_END|[19]|Rows:10
08:37:22.0 (20434238)|USER_DEBUG|[3]|DEBUG|INSIDE GETTER
08:37:22.0 (20537127)|USER_DEBUG|[20]|DEBUG|ACCOUNT LOG GENERATED null
Why does the Getter get called and make the list(lAcc) null even without any VF reference ?
apex attribute
edited Feb 1 at 18:07
Adrian Larson♦
110k19120256
asked Feb 1 at 17:09
starhunterstarhunter
389417
add a comment |
My understanding of the Getter Setter is that getter is invoked if the particular variable is being referenced in VF Page.
However for the following code I see that Getter is getting called even if no variable reference is on the page.
public class EmbeddedTest
{
public list<account> lAcc{
get{
system.debug('INSIDE GETTER');
return null;
}
set;
}
public void checkChanges()
{
lAcc=[select id,name from account limit 10];
system.debug('ACCOUNT LOG GENERATED '+lAcc);
}
}
VF Page:
<apex:page controller="EmbeddedTest">
<apex:form >
<apex:commandButton action="{!checkChanges}" value="Click to change!"/>
</apex:form>
</apex:page>
On clicking the button I see the below logs(in order):
08:37:22.0 (14537986)|SOQL_EXECUTE_BEGIN|[19]|Aggregations:0|SELECT
id, name FROM account LIMIT 10
08:37:22.0 (19987384)|SOQL_EXECUTE_END|[19]|Rows:10
08:37:22.0 (20434238)|USER_DEBUG|[3]|DEBUG|INSIDE GETTER
08:37:22.0 (20537127)|USER_DEBUG|[20]|DEBUG|ACCOUNT LOG GENERATED null
Why does the Getter get called and make the list(lAcc) null even without any VF reference ?
apex attribute
edited Feb 1 at 18:07
Adrian Larson♦
110k19120256
asked Feb 1 at 17:09
starhunterstarhunter
389417
add a comment |
My understanding of the Getter Setter is that getter is invoked if the particular variable is being referenced in VF Page.
However for the following code I see that Getter is getting called even if no variable reference is on the page.
public class EmbeddedTest
{
public list<account> lAcc{
get{
system.debug('INSIDE GETTER');
return null;
}
set;
}
public void checkChanges()
{
lAcc=[select id,name from account limit 10];
system.debug('ACCOUNT LOG GENERATED '+lAcc);
}
}
VF Page:
<apex:page controller="EmbeddedTest">
<apex:form >
<apex:commandButton action="{!checkChanges}" value="Click to change!"/>
</apex:form>
</apex:page>
On clicking the button I see the below logs(in order):
08:37:22.0 (14537986)|SOQL_EXECUTE_BEGIN|[19]|Aggregations:0|SELECT
id, name FROM account LIMIT 10
08:37:22.0 (19987384)|SOQL_EXECUTE_END|[19]|Rows:10
08:37:22.0 (20434238)|USER_DEBUG|[3]|DEBUG|INSIDE GETTER
08:37:22.0 (20537127)|USER_DEBUG|[20]|DEBUG|ACCOUNT LOG GENERATED null
Why does the Getter get called and make the list(lAcc) null even without any VF reference ?
apex attribute
edited Feb 1 at 18:07
Adrian Larson♦
110k19120256
asked Feb 1 at 17:09
starhunterstarhunter
389417
My understanding of the Getter Setter is that getter is invoked if the particular variable is being referenced in VF Page.
However for the following code I see that Getter is getting called even if no variable reference is on the page.
public class EmbeddedTest
{
public list<account> lAcc{
get{
system.debug('INSIDE GETTER');
return null;
}
set;
}
public void checkChanges()
{
lAcc=[select id,name from account limit 10];
system.debug('ACCOUNT LOG GENERATED '+lAcc);
}
}
VF Page:
<apex:page controller="EmbeddedTest">
<apex:form >
<apex:commandButton action="{!checkChanges}" value="Click to change!"/>
</apex:form>
</apex:page>
On clicking the button I see the below logs(in order):
08:37:22.0 (14537986)|SOQL_EXECUTE_BEGIN|[19]|Aggregations:0|SELECT
id, name FROM account LIMIT 10
08:37:22.0 (19987384)|SOQL_EXECUTE_END|[19]|Rows:10
08:37:22.0 (20434238)|USER_DEBUG|[3]|DEBUG|INSIDE GETTER
08:37:22.0 (20537127)|USER_DEBUG|[20]|DEBUG|ACCOUNT LOG GENERATED null
Why does the Getter get called and make the list(lAcc) null even without any VF reference ?
apex attribute
apex attribute
edited Feb 1 at 18:07
Adrian Larson♦
110k19120256
asked Feb 1 at 17:09
starhunterstarhunter
389417
edited Feb 1 at 18:07
Adrian Larson♦
110k19120256
asked Feb 1 at 17:09
starhunterstarhunter
389417
edited Feb 1 at 18:07
Adrian Larson♦
110k19120256
edited Feb 1 at 18:07
Adrian Larson♦
110k19120256
edited Feb 1 at 18:07
Adrian Larson♦
110k19120256
110k19120256
asked Feb 1 at 17:09
starhunterstarhunter
389417
asked Feb 1 at 17:09
starhunterstarhunter
389417
asked Feb 1 at 17:09
starhunterstarhunter
389417
389417
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You call the getter here:
system.debug('ACCOUNT LOG GENERATED '+lAcc);
Accessing the attribute value of lAcc in any way calls the getter.
answered Feb 1 at 17:11
Adrian Larson♦Adrian Larson
110k19120256
Okay. So does it mean that manipulation of lAcc(eg, the SOQL result assignment) will have no bearing on the value of lAcc. It will always return what the getter block returns.
– starhunter
Feb 1 at 18:39
It will always return what the getter block returns, yes. Assigning a value only calls the setter and doesn't call the getter unless you try to access the variable.
– Adrian Larson♦
Feb 1 at 18:47
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You call the getter here:
system.debug('ACCOUNT LOG GENERATED '+lAcc);
Accessing the attribute value of lAcc in any way calls the getter.
answered Feb 1 at 17:11
Adrian Larson♦Adrian Larson
110k19120256
Okay. So does it mean that manipulation of lAcc(eg, the SOQL result assignment) will have no bearing on the value of lAcc. It will always return what the getter block returns.
– starhunter
Feb 1 at 18:39
It will always return what the getter block returns, yes. Assigning a value only calls the setter and doesn't call the getter unless you try to access the variable.
– Adrian Larson♦
Feb 1 at 18:47
add a comment |
You call the getter here:
system.debug('ACCOUNT LOG GENERATED '+lAcc);
Accessing the attribute value of lAcc in any way calls the getter.
answered Feb 1 at 17:11
Adrian Larson♦Adrian Larson
110k19120256
Okay. So does it mean that manipulation of lAcc(eg, the SOQL result assignment) will have no bearing on the value of lAcc. It will always return what the getter block returns.
– starhunter
Feb 1 at 18:39
It will always return what the getter block returns, yes. Assigning a value only calls the setter and doesn't call the getter unless you try to access the variable.
– Adrian Larson♦
Feb 1 at 18:47
add a comment |
You call the getter here:
system.debug('ACCOUNT LOG GENERATED '+lAcc);
Accessing the attribute value of lAcc in any way calls the getter.
answered Feb 1 at 17:11
Adrian Larson♦Adrian Larson
110k19120256
You call the getter here:
system.debug('ACCOUNT LOG GENERATED '+lAcc);
Accessing the attribute value of lAcc in any way calls the getter.
answered Feb 1 at 17:11
Adrian Larson♦Adrian Larson
110k19120256
answered Feb 1 at 17:11
Adrian Larson♦Adrian Larson
110k19120256
answered Feb 1 at 17:11
Adrian Larson♦Adrian Larson
110k19120256
answered Feb 1 at 17:11
Adrian Larson♦Adrian Larson
110k19120256
110k19120256
Okay. So does it mean that manipulation of lAcc(eg, the SOQL result assignment) will have no bearing on the value of lAcc. It will always return what the getter block returns.
– starhunter
Feb 1 at 18:39
It will always return what the getter block returns, yes. Assigning a value only calls the setter and doesn't call the getter unless you try to access the variable.
– Adrian Larson♦
Feb 1 at 18:47
add a comment |
Okay. So does it mean that manipulation of lAcc(eg, the SOQL result assignment) will have no bearing on the value of lAcc. It will always return what the getter block returns.
– starhunter
Feb 1 at 18:39
It will always return what the getter block returns, yes. Assigning a value only calls the setter and doesn't call the getter unless you try to access the variable.
– Adrian Larson♦
Feb 1 at 18:47
Okay. So does it mean that manipulation of lAcc(eg, the SOQL result assignment) will have no bearing on the value of lAcc. It will always return what the getter block returns.
– starhunter
Feb 1 at 18:39
Okay. So does it mean that manipulation of lAcc(eg, the SOQL result assignment) will have no bearing on the value of lAcc. It will always return what the getter block returns.
– starhunter
Feb 1 at 18:39
It will always return what the getter block returns, yes. Assigning a value only calls the setter and doesn't call the getter unless you try to access the variable.
– Adrian Larson♦
Feb 1 at 18:47
It will always return what the getter block returns, yes. Assigning a value only calls the setter and doesn't call the getter unless you try to access the variable.
– Adrian Larson♦
Feb 1 at 18:47
add a comment |
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